A circular loop of wire is lying flat on a horizontal table in an external magnetic field, and you are looking down at it. There is an induced clockwise current in the loop. If the external field is directed upward toward you, then what is happening to the magnitude of this external field is that it is increasing. (Option A)
A changing magnetic field causes an induced current. The induced current is accompanied by an induced emf. A current can be generated in the absence of a battery in the circuit. The induced emf is described by Faraday's law of induction.
The generation of an electromotive force across an electrical conductor in a changing magnetic field is known as magnetic induction. Induction was discovered in 1831 by Michael Faraday, and James Clerk Maxwell mathematically characterized it as Faraday's law of induction.
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Full Question:
A circular loop of wire is lying flat on a horizontal table in an external magnetic field, and you are looking down at it. There is an induced clockwise current in the loop. If the external field is directed upward toward you, then what is happening to the magnitude of this external field?
A. Increasing
B. Decreasing
C. Not changing
D. Not enough information given
E. None of the above
