Here is a sample test for electrostatics:

1. What is the fundamental unit of charge called?
a) Proton
b) Electron
c) Coulomb
d) Neutron

2. Which of the following statements about electric charges is true?
a) Like charges attract each other
b) Unlike charges repel each other
c) Electric charges cannot be created or destroyed
d) All of the above

3. An object becomes positively charged when:
a) Electrons are added to it
b) Protons are added to it
c) Electrons are removed from it
d) Protons are removed from it

4. The force between two point charges is directly proportional to:
a) The product of their charges
b) The distance between them
c) Both the product of their charges and the distance between them
d) None of the above

5. Two identical point charges are placed 1 meter apart from each other. If the force between them is 9 N, what will be the force if the distance between them is doubled?
a) 18 N
b) 4.5 N
c) 2.25 N
d) 1.125 N

6. What is the electric field strength at a point located 2 meters away from a point charge of magnitude 4 C?
a) 8 N/C
b) 2 N/C
c) 1 N/C
d) 0.5 N/C

7. Which of the following statements about electric potential is true?
a) Electric potential is a scalar quantity
b) Electric potential is a vector quantity
c) Electric potential is measured in volts
d) Electric potential is directly proportional to the charge

8. Two parallel plates are connected to a battery, creating a uniform electric field between them. Which direction will a positive charge move?
a) Towards the positive plate
b) Towards the negative plate
c) The charge will not move
d) The direction of the charge depends on its initial position

9. What is the potential difference between two points if 2 J of work is done in moving a charge of 0.5 C between them?
a) 0.25 V
b) 1 V
c) 4 V
d) 8 V

10. What is the capacitance of a capacitor if it stores a charge of 6 C at a potential difference of 3 V?
a) 2 F
b) 9 F
c) 18 F
d) 0.5 F

Answers:
1. c) Coulomb
2. c) Electric charges cannot be created or destroyed
3. c) Electrons are removed from it
4. c) Both the product of their charges and the distance between them
5. b) 4.5 N
6. c) 1 N/C
7. a) Electric potential is a scalar quantity
8. a) Towards the positive plate
9. b) 1 V
10. a) 2 F

Ok