A magnetic field is perpendicular to the plane of a single-turncircular coil. The magnitude of the field is changing, so that anemf of 0.25 V and a current of 2.5 A are induced in the coil. Thewire is then re-formed into a single-turn square coil, which isused in the same magnetic field (again perpendicular to the planeof the coil and with a magnitude changing at the same rate). What(a) emf and (b) current are induced in the square coil?
