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4. Two concentric wire loops lie in the plane of the page. Loop A carries a current IĄ counter-clockwise (Assume that each wi

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a. If we increase IA , the . magnetic field will increase in the loop B. According to lenz law, current will be induced in loop B in clockwise direction .

b. If we decrease IA , the . magnetic field will decrease with time in the loop B. According to lenz law, current will be induced in loop B in counter clockwise direction .

c.If we tilt the loop B, . magnetic flux will decrease in the loop B. According to lenz law, current will be induced in loop B in counter clockwise direction .

d. When loop B is at the halfway as shown, B due right arc of loop A can be assumed to cancel out while . magnetic field due to left arc of loop A will decrease. So, current will be induced in loop B in counter clockwise direction .

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