A solenoid has an inductance of and a resistance of

PHYSICS · Subjective · AP · Physics C: Electricity and Magnetism · Electromagnetic Induction · Electromagnetic Induction

Problem

A solenoid has an inductance of

10\,\text{H}

and a resistance of

2\,\text{m}\Omega

. It is connected to a

10\,\text{V}

battery. How long will it take for the magnetic energy to reach

\frac14

of its maximum value?