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Use Lenz's law to determine the directio...

Use Lenz's law to determine the direction of induced current in the situations described by fig. a, b.
A circular loop being deformed into a narrow straight wire.

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When a circular loop deforms into a narrow straight wire, the magnetic flux linked with it also decreases. The current induced due to change in flux will flow in such a direction that it will oppose the decrease in magnetic flux so it will flow anti clockwise i.e along a'd'cb'a', due to which the magnetic field produced will be out of the plane of paper.
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