Download ASSIGNMENT ON PHYSICS CLASS:12 DATE:18-O4

ASSIGNMENT ON PHYSICS
CLASS:12
DATE:18-O4-2017
CHAPTER:ELECTROSTATICS
1. certain region has cylindrical symmetry of electric field. Name the charge
distribution producing such a field.
2. A charge of 10 μc is brought from point A (0,4 cm,0) to C (3 cm,0,0) via point B
(0,0,6 cm) in vacuum. Calculate the work done if the charge at origin is 20 μc.
niformly char. Where the energy of capacitor does resides?
3.
Do electrons tend to go to region of low or high potential?
4. What is the net charge on the charged capacitor?
5. A Gaussian surface encloses an electric dipole within it. What is the total flux
across sphere?
6. Three
charges, each equal to +2C are placed at the corners of an equilateral
triangle. If the force between any two charges be F, then what will be the net force
on either Charge?
7. A point charge q is placed at O as shown in the figure. Is VP-VQ +ve or –ve
when (i) q>0, (ii) q<0? Justify your answer.
8. An electric dipole of dipole moment 20 X 10-6 C.m is enclosed by a closed
surface. What is the net flux coming out of the surface?
9. What is the angle between the electric dipole moment and electric field strength
due to it on the equilateral line?
10 An electric dipole is held in an uniform electric field. Using suitable diagram,
show that it doesn’t undergo any translatory motion, and (ii)Derive an expression
for torque acting on it and specify its direction.