Physics

Problem

A single circular loop of radius

20\,\text{cm}

lies in the

xy

-plane. The magnetic field in the region is perpendicular to the loop and given by

B = 0.50\, r\, t\;\text{T}

(with

r

in metres and

t

in seconds) for

0 \le r \le 0.20\,\text{m}

. Calculate the magnitude of the induced EMF in the loop at

t = 2.0\,\text{s}

. a)

12.6\,\text{mV}

8.4\,\text{mV}

17\,\text{mV}

4.2\,\text{mV}