Time Left:
600
sec
2. If the battery voltage in the figure is 12 volts and the plate separation is 0.8 cm. If a charge of 3 micro C moves from the upper plate to the lower one, what is its change in electrical potential energy?
A. 36 micro J
B. 12 micro J
C. 24 micro J
D. 48 micro J
3. The potential energy of a system containing only one point charge is
A. Zero
B. Infinity
C. Nonzero finite
D. None of the above
5. Negative mutual potential energy corresponds to attraction between two charges
A. False
B. True
C. Can’t predict
D. None of the above
6. If a unit charge is taken from one part to another part over an equipotential surface, then what is the change in electrostatic potential energy of the charge?
A. 10 J
B. 100 J
C. 1 J
D. 0 J
7. The electrostatic potential energy of given system is
A. Positive
B. Negative
C. Can’t predict
D. None of the above
8. In bringing an electron towards another electron, the electrostatic potential energy of the system
A. becomes zero
B. decreases
C. remains same
D. increases
10. A proton is accelerated from rest through a potential of 500 volts. Its final kinetic energy is
A. 1000 eV
B. 500 eV
C. 50 eV
D. 2000 eV
11. The electrostatic potential energy between two charges q1 and q2 separated by a distance by r is given by
A. A
B. B
C. C
D. D
12. What is the electrostatic potential energy of a system containing two charges 40 nC and 60 nC at a distance of 36 cm?
A. 100 micro J
B. 60 micro J
C. 120 micro J
D. 80 micro J
15. Positive mutual potential energy of a system containing two charges corresponds to
A. Repulsion
B. Attraction
C. Can’t predict
D. None of the above
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