Electrostatics -Multiple Choice Questions Quiz

Question 1: What is the fundamental property of matter that gives rise to electrostatic forces?

(a) Gravitational mass
(b) Electric charge
(c) Inertia
(d) Magnetic moment

Question 2: What is the SI unit of electric charge?

(a) Ampere
(b) Volt
(c) Coulomb
(d) Ohm

Question 3: What happens to the magnitude of the electrostatic force between two point charges if the distance between them is doubled?

(a) It becomes half of the original force.
(b) It becomes one-fourth of the original force.
(c) It becomes twice the original force.
(d) It remains the same.

Question 4: Which of the following statements about electric field lines is correct?

(a) Electric field lines always form closed loops.
(b) Electric field lines are always straight lines.
(c) Electric field lines originate from positive charges and terminate on negative charges.
(d) Electric field lines do not have any directional property.

Question 5: What is the direction of the electric field at a point due to a positive point charge?

(a) Radially inward, toward the charge
(b) Radially outward, away from the charge
(c) Tangential to the surface of the charge
(d) Parallel to the direction of motion of the charge

Question 6: What is the net electric field at a point located between two equal and opposite point charges?

(a) Zero
(b) Non-zero but constant
(c) Variable with time
(d) Infinity

Question 7: When a conductor is in electrostatic equilibrium, where does the excess charge reside?

(a) Only on the outer surface of the conductor
(b) Only on the inner surface of the conductor
(c) Throughout the volume of the conductor
(d) Only at the center of the conductor

Question 8: Which of the following materials is an insulator?

(a) Copper
(b) Aluminum
(c) Glass
(d) Silver

Question 9: What is the primary cause of lightning during a thunderstorm?

(a) Electric charges on the surface of the Earth
(b) Electric charges on clouds
(c) Magnetic field fluctuations
(d) Ionization of the atmosphere

Question 10: What effect does the presence of a dielectric material have on the capacitance of a capacitor?

(a) Decreases the capacitance
(b) Increases the capacitance
(c) Does not affect the capacitance
(d) Depends on the type of dielectric material

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Total score: /10

Answer key:

Question 1: b

Question 2: c

Question 3: b

Question 4: c

Question 5: b

Question 6: a

Question 7: a

Question 8: c

Question 9: b

Question 10: b