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An inductor of 2 henry and a resistance ...

An inductor of `2` henry and a resistance of `10` ohms are connected in series with a battery of `5` volts. The initial rate of change of current is

A

0.5 amp/sec

B

2.0 amp/sec

C

2.5 amp/sec

D

0.25 amp/sec

Text Solution

Verified by Experts

The correct Answer is:
C
`i=i_(0)(1-e^(-(Rt)/L))rArr(di)/dt=V/RxxR/Le^(-R/Lt)`
At, t = 0, `(di)/dt=5/2=2.5amp//sec`.
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