A flexible loop has a radius of r 12.8 cm and it is inside a uniform magnetic fi

Question

A flexible loop has a radius of r 12.8 cm and it is inside a uniform magnetic field of B 0.357 T. The loop is grasped at points P and Q and stretched until its area is zero. It takes 249 ms to close the loop What is the magnitude of the average induced electromotive force in the loop during the stretching process? (?? ) Tries 0/ 12 Complete the following sentence: During the stretching process described above.. O no current flows. O current flows clockwise. O current flows counter clockwise. O current flows in different directions at different stages of the process.

Explanation / Answer

Induced emf

e= BA/t= 0.357*pi*0.128^2/0.249

e= 0.07376 V

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Using Lenz law in stretching process current flows in clockwise direction.

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Comment in case any doubt..goodluck

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