Question

An ideal coil of 10H is connected in series with a resistance of 5Ω and a battery of 5V. 2 second after the connection is made, the current flowing in ampere in the circuit is

(a) (1 – e^–1) 

(b) (1 – e)

(c) e 

(d) e^–1

Answer 1

(a) : During the growth of current in LR circuit is