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A coil is wrapped with 309 turns of wire on the perimeter of a circular frame (of radius 50cm). Each turn has the same area, equal to that of the frame. A uniform magnetic field is directed perpendicular to the plane of the coil. This field changes at a constant rate from 27mT to 63mT in 30ms.

What is the magnitude of the induced (E) in the coil at the instant the magnetic field has a magnitude of 46mT? Answer in units of V

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