A coil is wrapped with 200 turns of wire
on the perimeter of a square frame of sides
20.5 cm. Each turn has the same area, equal
to that of the frame, and the total resistance
of the coil is 2.01 Ω. A uniform magnetic field
is turned on perpendicular to the plane of the
If the field changes linearly from 0 to
−0.0428 Wb/m2
in a time of 0.692 s, find
the magnitude of the induced emf in the coil
while the field is changing.
Answer in units of V.

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