Download Maxwell`s Equations 1.The concept of displacement current was a

Maxwell’s Equations
1.The concept of displacement current was a major contribution attributed to Ans:c
a) Faraday
b) Lenz
c) Maxwell
d) Lorentz
2. If a wire parallel to the base of a horizontal U-shaped wire is pulled back and
forth while the circuit is perpendicular to a uniform B-field, the system will be an
example of a Ans:B
A) AC motor
B) AC generator
C) DC motor
D) DC generator
3. If the North pole of a bar magnet is moved down toward a wire loop on the
floor, the current induced in the wire will flow Ans:B
A) clockwise
B) counterclockwise
4. If the South pole of a bar magnet is moved up away from a wire loop on the
floor, the current induced in the wire will flow
Ans:B
A) clockwise
B) counterclockwise
5. Displacement current (ID) is proportional to
A) ΦB
B) ΦE
C) dΦB/dt
D) dΦE/dt
Ans:D
6. If a thin aluminum plate is swung vertically between the plates of a horseshoe
magnet, the swing will not be dramatically slowed if the plate contains a
Ans:B
A) series of vertical slots
B) series of horizontal slots
C) solid (no slots)
7.A loop is rotating about the y-axis in a magnetic field B=Bosinωt axWb/m2.The voltage induced
in the loop is due to Ans:C
A) Motional emf
C) A combination of motional and transformer emf
B) Transformer emf
D) none
8.Maxwell’s Equation describes the interrelationship among electric field,electric charge, magnetic
field,and: Ans:D
A) Plasmic field B) Electron Pulse
c) Tiberium Charge D)None of the above
9.What is electromagnetism ? Ans:B
A) A current that repels quasi-metals such as vibranium.
B) A field which exerts a force on particles that posses properties of electric charge.
C) A field of electrically charge magnets that posses properties of both elements.
D) None of the above.
10.A rectangular coil of 100 turns and size 0.1m*0.05m is placed perpendicular to a magnetic field of
0.1T. If the field drops to 0.05T in 0.05s, the magnetic of induced emf is : Ans:B
A)0.1 V
B)0.5V
C) 1V
D) 2V
11. A Loop connected to DC supply placed in varying magnetic field with no slip rings or brushes Ans:B
A) Rotates
B) Oscillates
C)Do Not move
D)Cannot be determined