Electromagnetic Induction - Result Question 9
9. The current in a coil varies with time as shown in the figure. The variation of induced emf with time would be
[2011]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 9. (a)
Solution:
- (a)
During 0 to
During
During
Thus graph given in option (a) represents the variation of induced emf with time.
Inductance does not play any role till there is a constant current flowing in the circuit. It opposes any change in the current in the circuit.