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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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(a) Along adcd (flux through the surface increases during shape change, so induced current produces opposing flux).
(b) Along a′d′c′b′ (flux decreases during the process)
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