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When the current through a solenoid incr...

When the current through a solenoid increases at a constant rate, the induced current in the solenoid

A

Is constant and is in the direction of the inducing current

B

Is constant and is opposite to the direction of the inducing current

C

Increases with time and is in the direction of the inducing current

D

Increases with time and opposite to the direction of the inducing current

Text Solution

Verified by Experts

The correct Answer is:
B
`e=-L(di)/dtrArr` induced emf
Now, for induced current
`i=e/R=-L/R(di)/dt`
As `(di)/dt` = constant, hence, i = constant
According to Lenz.s law, the induced current will flow in a direction opposite to that of inducing current, so as to oppose the increase in inducing current.
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