Download 1. If the force on a stationary charge Q is F and then the electric field

G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-1
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-1
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
1. If the force on a stationary charge Q is F and then the electric field
intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
2. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
3. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
4. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
1. If the force on a stationary charge Q is F and then the electric field
intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
2. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
3. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
4. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
5. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
6. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
7. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
8. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
9. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
10. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
5. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
6. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
7. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
8. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
9. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
10. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
11. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
12. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
13. The unit of magnetic flux density is
[
]
(a) Wb/m
(b) Tesla
(c) Tesla/m2 (d) None
14. Energy Stored in a capacitor ( C= 1 nF, and Max operating
voltage = 600V) is --------------15. The polarization P in the dielectric material with εr = 2.8 when D
= 3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
16. Ohms law in point form
[
]
2
(a) E = σ J
(b) J = E / σ
(c) J = σ E
(d) J = pu
17. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
18. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
19. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
20. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
11. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
12. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
13. The unit of magnetic flux density is
[
]
(a) Wb/m
(b) Tesla
(c) Tesla/m2 (d) None
14. Energy Stored in a capacitor ( C= 1 nF, and Max operating
voltage = 600V) is --------------15. The polarization P in the dielectric material with εr = 2.8 when D
= 3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
16. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
17. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
18. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
19. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
20. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-2
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-2
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
1. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
2. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
3. The unit of magnetic flux density is
[
]
2
(a) Wb/m
(b) Tesla
(c) Tesla/m (d) None
4. Energy Stored in a capacitor ( C= 1 nF, and Max operating voltage
= 600V) is --------------5. The polarization P in the dielectric material with εr = 2.8 when D =
3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
6. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
7. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
8. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
9. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
10. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
1. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
2. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
3. The unit of magnetic flux density is
[
]
(a) Wb/m
(b) Tesla
(c) Tesla/m2 (d) None
4. Energy Stored in a capacitor ( C= 1 nF, and Max operating voltage
= 600V) is --------------5. The polarization P in the dielectric material with εr = 2.8 when D =
3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
6. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
7. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
8. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
9. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
10. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
11. If the force on a stationary charge Q is F and then the electric
field intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
12. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
13. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
14. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
11. If the force on a stationary charge Q is F and then the electric
field intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
12. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
13. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
14. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
15. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
16. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
17. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
18. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
19. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
20. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
15. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
16. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
17. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
18. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
19. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
20. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-3
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-3
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
1. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
2. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
3. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
4. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
5. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
6. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
7. If the force on a stationary charge Q is F and then the electric field
intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
8. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
9. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
10. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
1. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
2. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
3. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
4. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
5. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
6. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
7. If the force on a stationary charge Q is F and then the electric field
intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
8. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
9. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
10. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
11. The polarization P in the dielectric material with εr = 2.8 when D
= 3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
12. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
13. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
14. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
15. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
16. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
17. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
18. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
19. The unit of magnetic flux density is
[
]
(a) Wb/m
(b) Tesla
(c) Tesla/m2 (d) None
20. Energy Stored in a capacitor ( C= 1 nF, and Max operating
voltage = 600V) is ---------------
11. The polarization P in the dielectric material with εr = 2.8 when D
= 3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
12. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
13. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
14. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
15. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
16. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
17. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
18. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
19. The unit of magnetic flux density is
[
]
(a) Wb/m
(b) Tesla
(c) Tesla/m2 (d) None
20. Energy Stored in a capacitor ( C= 1 nF, and Max operating
voltage = 600V) is ---------------
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-4
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
1. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
2. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
3. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
4. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
5. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
6. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
7. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
8. The unit of magnetic flux density is
[
]
(a) Wb/m
(b) Tesla
(c) Tesla/m2 (d) None
9. Energy Stored in a capacitor ( C= 1 nF, and Max operating voltage
= 600V) is --------------10. The polarization P in the dielectric material with εr = 2.8 when D
= 3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
G.PULLAIAH COLLEGE OF ENGINEERING & TECHNOLOGY::KURNOOL
MID-I Objective Paper
SET-4
Sub: EMTL
Branch: II-II ECE
Date: 09/03/17
Time: 20 min
Max. Marks: 10
Roll No:
Invigilator signature:
1. Ohms law in point form
[
]
(a) E = σ J
(b) J = E2/ σ
(c) J = σ E
(d) J = pu
2. The Laplace’s equation for the scalar V is
[
]
(a)
(b)
(c)
(d)
3. Which of the following is not correct
[
]
(a) Magnetic flux is conserved
(b) Magnetic flux lines are always closed
(c) Magnetic flux lines never cross each other
(d) total flux passing through in closed surface is equal to current
enclosed
4. One of the following cannot produce magnetic fields. [
]
(a) Permanent magnets
(b) direct currents
(c) moving charges
(d) static charges
5. The Magnetic flux density and magnetic field intensity are related
by
[
]
(a) B =
(b) B =
(c) B = H (d) B =
6. If ε is not same in all the direction, then the medium is known as
(a) Linear
(b) non linear
[
]
(c) anisotropic
(d) Homogeneous
7. one of the following is not a source of magnetic field [
]
(a) A DC current in a wire
(b) A permanent magnet
(c) An accelerated charge
(d) all
8. The unit of magnetic flux density is
[
]
2
(a) Wb/m
(b) Tesla
(c) Tesla/m (d) None
9. Energy Stored in a capacitor ( C= 1 nF, and Max operating voltage
= 600V) is --------------10. The polarization P in the dielectric material with εr = 2.8 when D
= 3 X 10-7 ax C/m2 is
[
]
(a) 2 X 10-7 ax
(b) 1.5X10-7 ax
(c) 1.93X10-7 ax
(d) 1.07 X 10-7 ax
11. If the force on a stationary charge Q is F and then the electric
field intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
12. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
13. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
14. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
11. If the force on a stationary charge Q is F and then the electric
field intensity E is
[
]
(a) F/Q
(b) FQ
(c) F/ Q2
(d) Q/F
12. Three point charges Q1= 30 nC, Q2 = 150nC and Q3 = -70 nC are
enclosed by surface S. The net flux crossing the surface is [
]
(a) -110 nC
(b) 110 nC
(c) 100 nC
(d) -70 nC
13. Divergence theorem can be used to convert
[
]
(a) Surface integral into volume integral (b) line into surface
integral
(c) line to volume integral
(d) volume to surface
integral
14. The Electric flux density and electric field intensity are related
by [
]
(a) D = εOE
(b) D = εO /E
(c) D = E/ εO (d) None
15. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
16. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
17. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
18. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
19. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
20. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero
15. The units for Electric field intensity
[
]
(a) V/m
(b) A/m
(c) C/m2
(d) H/m
16. The Lorentz force equation is represented in electromagnetic
fields is given as ______________________________
17. Sea water has εr = 80. Its permittivity is
[
]
(a) 71
(b) 79
(c) 5.162X 10-10 F/m
(d ) 7.0 74 X 10-10 F/m
18. The relaxation time of mica ( σ = 10-15 ohms/m, εr = 6) is [
]
(a) 5 X 10-10 s
(b) 5 hours
(c) 10 hours
(d) 15 hours
19. Which of the following is analogous to Ampere’s law in
electrostatics?
[
]
(a) Coulomb’s law
(b) Gauss law (c) Ohm’s law (d) Lenz law
20. If ε does not vary with applied Electric field then the medium is
(a) Linear
(b) non linear
[
]
(c) isotropic
(d) Homogeneous zero