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A circular wire loop with a radius of 10 cm is placed in a magnetic field...

A circular wire loop with a radius of 10 cm is placed in a magnetic field of 1.0 T that is parallel to its axis into the page. The loop is stretched to half of its initial area within a time of 0.1 seconds. What is the induced voltage and the direction of induced current?

(a) 157 mV, clockwise current

(b) 120 mV, counter clockwise current

(c) 79 mV, clockwise current

(d) 0 V, no current

The answer is A but I especially don't understand how to figure out that it is clockwise. If it could be explained step by step that would be great. Thank you.

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