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ELECTROSTATICS

Total questions: 20

Worksheet time: 8mins

Name
Class
Date
1.

Which of the following graphs shows the variation of Electric field 'E' due to a hollow spherical conductor of radius R as a function of distance from the center of the sphere ?

a)
b)
c)
d)
2.

Where do electrons go when you rub a balloon on your hair?

a)

Into Hair

b)

Nowhere

c)

Onto Hair

d)

None Of These

3.

The unit of permittivity is:

a)

N m2 C-2

b)

C2N-1m-2

c)

H m-1

d)

N C-2m-2

4.

Find the odd one out :

a)

Electric field intensity

b)

Electrostatic force

c)

Electric dipole moment

d)

Electric Potential

5.

Gauss law is another form of :

a)

Newton's law

b)

Ohm's law

c)

Coulomb's Law

d)

Kepler's Law

6.

Value of k on Coulomb's law depends upon

a)

Magnitude of charges

b)

Distance between charges

c)

Both a and b

d)

Medium between two charges

7.

The force experienced by a unit charge is:

a)

Electric flux

b)

Electric potential

c)

Electric Field

d)

Static electricity

8.

Charge per unit volume is called________

a)

Volume Charge Density

b)

Linear Charge Density

c)

Surface Charge Density

d)

Electric Flux

9.

1 volt is equivalent to

a)

Newton / Second

b)

Newton / Coulomb

c)

Joule / Second

d)

Joule / Coulomb

10.

A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will

a)

Become Zero

b)

Decreases

c)

Increases

d)

Remains the Same

11.

What is the geometrical shape of equipotential surfaces due to a single isolated charge ?

a)

Ellipsoid

b)

Spherical

c)

Cylindrical

d)

Planar

12.

When glass rod is rubbed with silk , it

a)

Gains Electrons To Silk

b)

Gains Electrons From Silk

c)

Gains Protons From Silk

d)

Gives Protons To Silk

13.

A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis. The total flux for the surface of the cylinder is given by

a)

2πR2 E

b)

πR2

c)

(πR2 -πR )/E

d)

Zero

14.

Electric field at a point varies as r0 for

a)

An Electric Dipole

b)

A Plane Infinite Sheet Of Charge

c)

A Point Charge

d)

A Line Charge Of

15.

Total electric flux coming out of a unit positive charge kept in air is

a)

ε0

b)

ε0-1

c)

(4πε0) -1

d)

4πε0

16.

A point charge q is placed at a distance a/2 directly above the center of a square of side a . The electric flux through the square is

a)

q/6 ε0

b)

q/ ε0

c)

q/ πε0

d)

c) q/ 4ε0

17.

The magnitude of electric field intensity E is such that , an electron placed in it would experience an electrical force equal to its

a)

mge

b)

mg/e

c)

e/mg

d)

e2g/m2

18.

Electric field lines provide information about

a)

Field strength

b)

Direction

c)

Nature of charge

d)

All of these

19.

The surface considered for Gauss 's law is called

a)

Closed surface

b)

Spherical surface

c)

Gaussian Surface

d)

Plane surface

20.

If 5J of work is required to shift 10 C charge from one place to another place then potential energy difference is

a)

0.5 V

b)

2 V

c)

5 V

d)

10 V