A circular loop in the plane of a paper lies in a 085 t, Ask an Expert

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A circular loop in the plane of a paper lies in a 0.85 T magnetic field pointing into the paper. The loop's diameter changes from 18.5 centimeter to 6.0 centimeter in 0.50 second.

a) Find what is the magnitude of the average induced emf?

b) Find the average induced current if the coil resistance is 4.1 ohm?

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