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# Electromotive Force of a Coil

APPHEM-WPYYXC

A coil of negligible self-inductance and a radius of $0.50m$ encloses a magnetic field that is perpendicular to it and changing at a rate of 3.0 T/s.

What is the $emf$ of the coil?

A

$0.5 \pi V$

B

$0 .75 \pi V$

C

$\pi V$

D

$1.5 \pi V$

E

$2.0 \pi V$