Physics

Problem

A square loop of side

0.20\,\text{m}

is held with its plane perpendicular to a uniform magnetic field. The field varies with time according to

B = 0.30t^{2} + 2.0t

(SI units). The magnitude of the induced emf at

t = 2.0\,\text{s}

is a)

0.064\,\text{V}

0.208\,\text{V}

0.128\,\text{V}

0.048\,\text{V}