A square coil of wire of side 3.80 cm is placed in a uniform magnetic field of m

Question

A square coil of wire of side 3.80 cm is placed in a uniform magnetic field of magnitude 2.25 T directed into the page as in the figure shown below. The coil has 30.0 turns and a resistance of 0.780 ?. If the coil is rotated through an angle of 90.0

A square coil of wire of side 3.80 cm is placed in a uniform magnetic field of magnitude 2.25 T directed into the page as in the figure shown below. The coil has 30.0 turns and a resistance of 0.780 ?. If the coil is rotated through an angle of 90.0 degree about the horizontal axis shown in 0.335 s, find the following. the magnitude of the average emf induced in the coil during this rotation the average current induced in the coil during this rotation

Explanation / Answer

Part A)

Apply EMF = -NBA/t

EMF = -(30)(2.25)(.038)^2/.335

EMF = -.291 V

Part B)

EMF = IR

.291 = (I)(.78)

I = .373 A

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