Question: A long straight wire carrying a steady current is in the plane of a circular loop of wire. See the figure with Multiple-Choice Question 4.

A long straight wire carrying a steady current is in the plane of a circular loop of wire. See the figure with Multiple-Choice Question 4.
(a) If the loop is moved closer to the wire, what direction does the induced current in the loop flow?
(b) At one instant, the induced emf in the loop is 3.5 mV. What is the rate of change of the magnetic flux through the loop at that instant in webers per second?

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a According to Lenzs law the direction of an induced current ... View full answer

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