A coil of inductance 2H and resistance 10 ohm is connected across a battery of 100 V alond with a - Physics - Electromagnetic Induction

Question

A coil of inductance 2H and resistance 10 ohm is connected
across a battery of 100 V alond with a key At time t=0 the key is
closed find the current in the circuit at t=1sec? Kindly answer
sir/mam

Malka Tarannum · Accepted Answer

The initial current is, i=i0=εR=10010=10 A

The time constant is, τ=LR=210=0 2 s

Thus, the current at t = 1s is
i=i0 e-tτ =10 e-10 2 =10 e-5=6
7×10-2 A

A coil of inductance 2H and resistance 10 ohm is connected across a battery of 100 V alond with a key . At time t=0 the key is closed find the current in the circuit at t=1sec? Kindly answer sir/mam.