the coil A is made to rotate about a vertical axis (Fig No current ...

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the coil A is made to rotate about a vertical axis (Fig No current flows in B if \( \mathrm{A} \) is at rest. The current in coil
\( \mathrm{P} \) A, when the current in B \( (a t=0) \) is counterclockwise and the coil A

W is as shown at this instant, \( t=0 \), is
(a) constant current clockwise.
(b) varying current clockwise.
(c) varying current counterclockwise.
(d) constant current counterclockwise.
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