Metal rings P and Q are lying in the same plane, where current I is… | MHT CET 2020 (19 Oct, Shift 2)

Q24MHT CET 2020 · 19 OCT · SHIFT 2Medium

Lenz's Law, Eddy Currents & Induced Electric Field

Metal rings $P$ and $Q$ are lying in the same plane, where current I is increasing steadily. The induced current in metal rings is shown correctly in figure

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Answer: (c)

Above the wire (ring P) the field is out of the page; below (ring Q) it is into the page. Both grow as $I$ increases.
P: outward flux increasing, so induced current gives an inward field, i.e. clockwise.
Q: inward flux increasing, so induced current gives an outward field, i.e. anticlockwise.
Figure (c) shows P clockwise and Q anticlockwise. Answer (c).

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Lenz's Law, Eddy Currents & Induced Electric Field question from MHT CET 2020 (19 Oct, Shift 2)

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