A uniform circular loop of radius a and resistance& R is pulled at...

A uniform circular loop of radius a and resistance& $R$ is pulled at a constant velocity $v$ out of a region of a uniform magnetic field whose magnitude is $B$. The plane of the loop and the velocity are both perpendicular to $B$. Then the electrical power in the circular loop at the instant when the arc (of the circular loop) outside the region of magnetic field subtends an angle $\dfrac{π}{3}$ at the centre of the loop is