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In the circuit shown in Fig. Sliding con...

In the circuit shown in Fig. Sliding contact is moving with uniform velocity towards right. Its value at some instance is `12 (Omega)`. The current in the circuit at this instant of time will be

A

0.5 A

B

More than 0.5 A

C

Less than 0.5 A

D

May be less or more than 0.5A depending on the value of L.

Text Solution

Verified by Experts

The correct Answer is:
B
Since resistor of the circuit is increasing and hence current in the circuit is decreasing so `(di)//(dt)` is negative.
Current in the circuit is given by `i=(6-L(di)/(dt))/(12)`
Since `(di)/(dt)` is negative so the value of numerator will be more than 6V and hence current in the circuit at that instant will be more than 0.5A.
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