# Electrostatics MCQs

For your better entry test preparation and better Physics MCQs preparation, in this section, we are going to post Electrostatics MCQs.

Electrostatics is the branch of physics which deals with the electric charges at rest. Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber is electron which was the source of the word ‘electricity‘.

### Electrostatics MCQs

1. When we rub a glass rod with a silk cloth then
A. Glass rod acquires negative charge while silk acquires a positive charge
B. Glass rod acquires positive charge while silk acquires negative charges
C. Both glass rod and silk acquire a negative charge
D. Both glass rod and silk acquire a positive charge

2. If the distance between the two point charges become half then force between them becomes
A. Double
B. Half
C. Four times
D. Remains same

3. The minimum charge on an object cannot be less than
A. 1.6 x 10-19C
B. 3.2 x 10-19C
C. 9.1 x 109C
D. No definite value exist

4. The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is
A. 9x107N
B. 900N
C. 9x105N
D. 9x106N

5. The electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permittivity Cr the force between the charges will
A. Decrease
B. Increase
C. Remain constant
D. Depends upon the composition of a dielectric

6. Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become
A. 1/4th of its original value
B. 1/8th of its original value
C. 4 times of its original value
D. 8 times of its original value

7. The force per unit charge is known as
A. Electric flux
B. Electric intensity
C. Electric potential
D. All of above are same

8. An electric field can deflect
A. Neutrons
B. X-rays
C. Both glass rod and silk acquire a negative charge
D. None

9. An electric charge at rest produces
A. Only a magnetic field
B. Only an electric field
C. Neither electric field nor magnetic field
D. Both electric and magnetic fields