A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Correct Answer: B
Solution :
The relation of induced emf is \[e=\frac{Ldi}{dt}\] and current i is given by \[i=\frac{e}{R}=\frac{1}{R}.\frac{L.di}{dt}\]Þ \[\frac{di}{dt}=i\frac{R}{L}=\frac{i}{L/R}\]. In order to decreases the rate of increase of current through solenoid. We have to increase the time constant \[\frac{L}{R}.\]
You need to login to perform this action.
You will be redirected in
3 sec
