The flexible loop in the figure below has a radius of 11 cm and is in a magnetic

Question

The flexible loop in the figure below has a radius of 11 cm and is in a magnetic field of strength 0.19 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.19 s to close the loop, what is the magnitude of the average induced emf in it during this time?

The flexible loop in the figure below has a radius of 11 cm and is in a magnetic field of strength 0.19 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.19 s to close the loop, what is the magnitude of the average induced emf in it during this time? Your response differs from the correct answer by more than 100%, mv x xXxX x xXXx xX xX

Explanation / Answer

e = d / dt

= B.A

e = d (B.A) / dt

e = B dA / dt

e = B (A-0) / t

e = B A/t

e = .19 x pi x (.11)^2 / .19

e = .038 V

e = 38 mV

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