A coil of inductance and resistance is in a series circuit with an open key and a…

PHYSICS · Multi-part · CBSE · Physics · Electromagnetic Induction · Electromagnetic Induction

Problem

A coil of inductance

2\,\mathrm{H}

and resistance

10\,\Omega

is in a series circuit with an open key and a cell of constant voltage

100\,\mathrm{V}

with negligible resistance. At time

t=0

, the key is closed. Find (1) the time constant of the circuit. (2) the maximum steady current in the circuit. (3) the current in the circuit at

t=1\,\mathrm{s}