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The resistance in the following circuit ...

The resistance in the following circuit is increase at a particle instant. At this instant the value of resistanc eis `10Omega`. The current in the circuit will be now

A

`i=0.5A`

B

`igt0.5A`

C

`ilt0.5A`

D

`i=0`

Text Solution

Verified by Experts

The correct Answer is:
B

If resistance is constant `(10Omega)` then steady current in the circuit `i=(5)/(10)=0.5A`. But resistance is increasing it means current through the circuit start decreasing. Hence inductance comes in picture which induces a current in the circuit in the same direction of main current. So `igt0.5A`.
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