Physics

Problem

The current in a primary coil is increased uniformly from

0

6\,\text{A}

30\,\text{ms}

. If the mutual inductance between the primary and a nearby secondary coil is

150\,\text{mH}

, the magnitude of the emf induced in the secondary is a)

45\,\text{V}

30\,\text{V}

60\,\text{V}

20\,\text{V}