A coil is wrapped with 500 turns of wire on the perimeter of a circular frame (radius = 8.6 cm). Each turn hasthe same area, equal to that of the frame. A uniform magnetic field is applied perpendicular to the plane of thecoil. This field changes at a constant rate from -8.0 to -7.5 mT in a time of 7.7 ms. What is the magnitudeof the induced emf in the coil at the instant when the magnetic field has a magnitude of −7.75 mT?

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