Problem 21.10 Part B What is the magnitude of the average induced emf? A circula

Question

Problem 21.10 Part B What is the magnitude of the average induced emf? A circular loop in the plane of a paper lies in a 0.75 T magnetic field pointing into the paper. The loop's diameter changes from 18.0 cm to 5.4 cm in 0.45 S Express your answer to two significant figures and include the appropriate units avgValueUnits Submit My Answers Give Up Part C What is the average induced current if the coil resistance is 4.9 ? Express your answer to two significant figures and include the appropriate units alue Units Submit My Answers Give Up

Explanation / Answer

B)

= BACos

i =(*0.027^2)(0.75 T)cos0 = 0.00171

f = (*0.09^2)(0.75 T)cos0 = 0.019

V = d / dt

V = (0.019 -  0.00171) / 0.45

V = 0.03842 v

C)

I = V / R = 0.03842 / 4.9

I = = 0.00784 A

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