The magnetic field perpendicular to a circular wire loop 7.4 cm in diameter is c

Question

The magnetic field perpendicular to a circular wire loop 7.4 cm in diameter is changed from +0.53 T to -0.39 T in 300 ms , where + means the field points away from an observer and - toward the observer. Part A Calculate the induced emf. Express your answer using two significant figures. E = 4.84•102 V SubmitMy AnswersGive Up Incorrect; Try Again; 4 attempts remaining Part B In what direction does the induced current flow? In what direction does the induced current flow? counterclockwise clockwise SubmitMy AnswersGive Up

Explanation / Answer

Flux = B.ds

Induced emf = S*dB/dt =3.14*3.7*3.7*10^(-4)*(0.82/300)*1000 = 1.17*10^(-2) V (ans)

Induced current will be in clockwise direction to cover for the negative change in flux.

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