Bihar Board - Class 12 Physics - Chapter 2: Electrostatic Potential and Capacitance Multiple Choice Questions
For Class 12 Bihar Board, the chapter Electrostatic Potential and Capacitance in Physics explain the concepts of electric potential, potential energy, capacitance, and the behavior of capacitors in circuits. You can also find the multiple-choice questions that help in mastering these topics and preparing effectively for exams on Vidyakul.
Multiple Choice Question
1. A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge .
(A) remains a constant because the electric field is uniform.
(B) increases because the charge moves along the electric field.
(C) decreases because the charge moves along the electric field.
(D) decreases because the charge moves opposite to the electric field.
Answer :- (C) decreases because the charge moves along the electric field.
2. Figures show some equipotential lines distributed in space. A charged object is moved from point A to point B.
(A) The work done in Fig. (i) is the greatest.
(B) The work done in Fig. (ii) is least.
(C) The work done is the same in Fig. (i), Fig.(ii) and Fig. (iii).
(D) The work done in Fig. (iii) is greater than Fig. (ii) but equal to that in Fig. (i).
Answer :- (C) The work done is the same in Fig. (i), Fig.(ii) and Fig. (iii).
3. Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately.
(A) spheres
(B) planes
(C) paraboloids
(D) ellipsoids
Answer: (A) spheres
4. The process in which a region is made free from any electric field is known as _____________.
(A)Electrostatic forcing
(B)Electrostatic binding
(C)Electrostatic shielding
(D)None of the options
Answer: (C) Electrostatic shielding
5. The formula for electrostatic potential is _____________.
(A)Electrostatic potential = Work done*charge
(B)Electrostatic potential = Work done/charge
(C)Electrostatic potential = Work done+charge
(D)Electrostatic potential = Work done-charge
Answer: (b) Electrostatic potential = Work done/charge
6. If a unit positive charge is taken from one point to another over an equipotential surface, then
(A) work is done on the charge.
(B) work is done by the charge.
(C) work done is constant.
(D) no work is done.
Answer: (D) no work is done.
7. A hollow metal sphere of radius 5 cm is charged so that the potential on its surface is 10 V. The potential at the centre of the sphere is
(A) 0 V
(B) 10 V
(C) Same as at point 5 cm away from the surface
(D) Same as at point 25 cm away from the surface
Answer: (B) 10 V
8. The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is
(A) proportional to the square root of the distance between the plates.
(B) linearly proportional to the distance between the plates.
(C) independent of the distance between the plates.
(D) inversely proportional to the distance between the plates.
Answer: (C) independent of the distance between the plates
9. The work done in moving a unit positive test charge over a closed path in an electric field is _____________.
(A)Always 1
(B)Infinite
(C)Zero
(D)Negative
Answer: (C) Zero
10. The work done against electrostatic force gets stored in which form of energy?
(A)Thermal energy
(B)Kinetic energy
(C)Potential energy
(D)Solar energy
Answer: (C) Potential energy
11.The electrostatic potential on the perpendicular bisector due to an electric dipole is _____________.
(A) Zero
(B) 1
(C) Infinite
(D) Negative
Answer: (A) Zero
12. A surface that has the same electrostatic potential at every point on it is known as _____________.
(A)Equal-potential surface
(B)Same potential surface
(C)Equi-magnitude surface
(D)Equipotential surface
Answer: (D) Equipotential surface
13. The forces in which sum of kinetic energy and potential energy is conserved are called as
(A) Electrostatic forces
(B) Nuclear forces
(C) Conservative forces
(D) Both (A) and (C)
Answer: ( C) conservative forces
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