A circular loop of wire of radius 11.8 cm is placed in a magnetic field directed

Question

A circular loop of wire of radius 11.8 cm is placed in a magnetic field directed perpendicular to the plane of the loop, as shown in the figure below. If the field decreases at the rate of 0.0530 T/s in some time interval, what is the magnitude of the emf induced in the loop during this interval?

______mV

A circular loop of wire of radius 11.8 cm is placed in a magnetic field directed perpendicular to the plane of the loop, as shown in the figure below. If the field decreases at the rate of 0.0530 T/s in some time interval, what is the magnitude of the emf induced in the loop during this interval? mV

Explanation / Answer

e = d / dt

= B*A

e = d (B.A) / dt

e = A d B / dt

e = pi (11.8)^2 x .0530

e = 23.18 V

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