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Electric Current - Questions and Answers

Practice questions on Electric Current.

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11. The current is called a steady current when
A. the electrons flow in the same direction
B. the number of electrons in the flow is constant
C. the electrons flow in all directions
D. the rate of flow of electrons is constant
Explanation:
12. The current through a conductor, I is equal to
A. nAeE τ/m
B. nAe2E τ/m
C. nAe2E τ/n
D. nAeE τ/n
Explanation:
13. The average relaxation time is
A. the time during which the electrons relax in between collisions
B. the time over which the electrons get accelerated
C. the time taken for scattering
D. the time taken for deflection
Explanation:
14. The electron current and the conventional current
A. flow in the same direction
B. flow in the opposite direction
C. do not coexist
D. coexist
Explanation:
15. The number of electrons flowing per second that makes a current of I ampere is
A. 6.25  109
B. 6.25  107
C. 6.25  1010
D. 6.25  1018
Explanation:
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