Chapter 5: Electrostatic Potential and Capacitance — Online MCQ Test
PHYSICS · CLASS 12 INTERMEDIATE 2 YEAR · Telangana State Board
Practice Chapter 5: Electrostatic Potential and Capacitance with a free chapter-wise online MCQ test.
This chapter covers: Focusing on electrostatics this chapter details electric potential potential energy equipotential surfaces conductors dielectrics parallel plate capacitors energy storage and serie....
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 5: Electrostatic Potential and Capacitance — Important Questions & Answers
What is the SI unit of electric potential?
- A. Joule
- B. Volt
- C. Newton
- D. Coulomb
Answer: B. Volt
Electric potential is defined as work done per unit charge, and its SI unit is volt.
Electric potential is defined as work done per unit charge, and its SI unit is volt.
The electric potential at a point is defined as the work done in bringing a unit positive test charge from:
- A. the point to infinity
- B. infinity to the point
- C. one point to another point in the same field only
- D. the origin to the point
Answer: B. infinity to the point
Electric potential at a point is the work done in bringing a unit positive charge from infinity to that point.
Electric potential at a point is the work done in bringing a unit positive charge from infinity to that point.
A charge q is moved through a potential difference of V. The work done is:
- A. q/V
- B. qV
- C. V/q
- D. q²V
Answer: B. qV
Work done in moving a charge through a potential difference is given by W = qV.
Work done in moving a charge through a potential difference is given by W = qV.
If the electric potential is constant throughout a region, then the electric field in that region is:
- A. uniform and non-zero
- B. zero
- C. maximum
- D. depends on the choice of origin
Answer: B. zero
Electric field equals the negative rate of change of potential. If potential is constant, its gradient is zero and hence the electric field is zero.
Electric field equals the negative rate of change of potential. If potential is constant, its gradient is zero and hence the electric field is zero.
A parallel plate capacitor is connected to a battery. If the plate separation is increased, which of the following is correct?
- A. Charge decreases and energy decreases
- B. Charge increases and energy increases
- C. Charge remains constant and energy remains constant
- D. Charge increases and potential decreases
Answer: A. Charge decreases and energy decreases
With battery connected, potential remains constant. Since C decreases when separation increases, the charge decreases and stored energy also decreases.
With battery connected, potential remains constant. Since C decreases when separation increases, the charge decreases and stored energy also decreases.