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The answer to this question (attached gif) is supposed to be "E".

I can get bL^2/R if I just compute the flux and differentiate to

compute the induced voltage and current, but how does one

figure out that it goes counter-clockwise. Also I'm at a loss to

explain why whatever effects the field has on the left side of the

loop wouldn't cancel out the effects on the right side of the loop.

(i.e. I was also tempted to answer "0"). Thanks in advance for any

insight. (Sorry if this is a double post, the 1st one seems lost?)

~Paul

I can get bL^2/R if I just compute the flux and differentiate to

compute the induced voltage and current, but how does one

figure out that it goes counter-clockwise. Also I'm at a loss to

explain why whatever effects the field has on the left side of the

loop wouldn't cancel out the effects on the right side of the loop.

(i.e. I was also tempted to answer "0"). Thanks in advance for any

insight. (Sorry if this is a double post, the 1st one seems lost?)

~Paul