Three loops of wire, one circular, one rectangular, and one square, are made from identical lengths of wire. If the loops are in the same increasing magnetic field perpendicular to the plane of the coils, which loop has the greatest induced emf?
a. the circular one
b. the rectangular one
c. the square one
d. All three would have the same emf induced.
a
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A 580-turn circular coil with an area of 0.0550 m2 is mounted on a rotating frame, which turns at a rate of 17.0 rad/s in the presence of a 0.0400-T uniform magnetic field that is perpendicular to the axis of rotation. What is the instantaneous emf in the coil at the moment that the normal to its plane is at a 50.0° angle to the field?
a. zero b. 21.7 V c. 18.9 V d. 16.6 V e. 0.0751 V
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