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Electric Potential - Questions and Answers

Practice questions on Electric Potential.

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6. Electric potential energy of charges q1and q2 is U=
A. q1 q2/d2
B. 1/4πεo.q1q2/d2
C. 1/4πεo.q1q2/d
D. q1q2/4πεo
Explanation:
7. The potential at a point due to a charge of 100 micro coulomb at a distance of 9m is
A. 103 V
B. 105 V
C. 104 V
D. 100 V
Explanation:
8. If a proton at a distance r due to an isolated point charge of q is
A. q/4πεor2
B. q/4πεor
C. p/4πεor3
D. p/4πεor2
Explanation:
9. The work done in moving a charge of + 10  10-4 µC from infinity to 25cm from a charge of + 3  10-2 µC is
A. 110-7 J
B. 1.810-6 J
C. 10.810-7 J
D. 108107 J
Explanation:
10. Electric potential of the earth is taken as
A. a large finite value
B. a small finite value
C. infinity
D. zero
Explanation:
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