The current in the primary coil of a transformer is ( in seconds)

PHYSICS · Single correct · AP · Physics C: Electricity and Magnetism · Electromagnetic Induction · Electromagnetic Induction

Problem

The current in the primary coil of a transformer is

I_p = 10\sin(100\pi t)\,\text{A}

(

t

in seconds). If the mutual inductance between the coils is

0.20\,\text{H}

, calculate the instantaneous emf induced in the secondary coil at

t = 0.01\,\text{s}

. (a)

+314\,\text{V}

(b)

+628\,\text{V}

(c)

-628\,\text{V}

(d)

+200\,\text{V}