03/03/2024
electrostatics:
1. What is the fundamental unit of charge?
a) Volt
b) Ampere
c) Coulomb
d) Ohm
2. Which law states that the force between two point charges is directly proportional to the product of their magnitudes and inversely proportional to the square of the distance between them?
a) Gauss's Law
b) Coulomb's Law
c) Ohm's Law
d) Faraday's Law
3. Which of the following materials is an insulator?
a) Copper
b) Silver
c) Glass
d) Aluminum
4. When a charged particle experiences a force due to an electric field, the direction of the force is ____________ to the direction of the electric field.
a) perpendicular
b) parallel
c) opposite
d) random
5. What is the SI unit of electric potential?
a) Ohm
b) Volt
c) Ampere
d) Coulomb
6. Which of the following statements about conductors is true?
a) They do not allow electric charges to move freely.
b) They easily allow electric charges to move freely.
c) They have very high resistance.
d) They cannot hold electric charge.
7. When a positively charged object is brought near a neutral object, what happens?
a) The neutral object gains a negative charge.
b) The neutral object gains a positive charge.
c) The neutral object remains neutral.
d) The neutral object loses all its charges.
8. The process of transferring charge by touching a charged object to a neutral object is known as:
a) Induction
b) Conduction
c) Repulsion
d) Polarization
9. If two positive charges are brought closer together, what happens to the force between them?
a) It increases
b) It decreases
c) It remains the same
d) It becomes zero
10. What happens to the electric field strength between two parallel plates if the distance between the plates is doubled?
a) It doubles
b) It quadruples
c) It halves
d) It remains the same
11. Which of the following statements about electric potential energy is true?
a) It is a vector quantity.
b) It is always positive.
c) It depends only on the magnitude of the charges.
d) It decreases with increasing distance between charges.
12. When a positive charge moves in the direction of an electric field, what happens to its electric potential energy?
a) It increases
b) It decreases
c) It remains the same
d) It becomes zero
13. A negatively charged object is brought near an initially uncharged conducting sphere. What happens to the charge distribution on the sphere?
a) The near side becomes positively charged, and the far side becomes negatively charged.
b) The entire sphere becomes negatively charged.
c) The entire sphere becomes positively charged.
d) There is no change in the charge distribution.
14. Which of the following statements about electric field lines is true?
a) They always point from positive to negative charges.
b) They always point from negative to positive charges.
c) They are parallel to the surface of a conductor.
d) They converge towards positive charges and diverge from negative charges.
15. What does the term "dielectric" refer to in electrostatics?
a) A material that allows electric charges to move freely.
b) A material that has a high electrical resistance.
c) A material that is a perfect conductor.
d) A material that does not conduct electricity but can be polarized by an electric field.
