N is number of turns of loop = 1

\(\displaystyle\triangle\phi\) is change of flux linked with the loop

\(\displaystyle\triangle{t}\) is time in which the change of flux has taken place

\(\displaystyle\phi={B}{A}={5}\times{10}^{{3}}\times{0.2}={1}\times{10}^{{3}}\) when plane of loop is perpendicular tofield \(\displaystyle\phi={0}\) when the plane of loop is parallel to field.

\(\displaystyle{E}={1}\times{\frac{{{10}^{{3}}}}{{{0.1}}}}={1}\times{10}^{{4}}\) v

The negative sign in formula simply shows the direction of induced emf is such that it opposes the change influx according to Lenz's Law.