A uniform but time varying magnetic field \( \mathrm{B}(t) \) \( \m...

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A uniform but time varying magnetic field \( \mathrm{B}(t) \)
\( \mathrm{P} \)
exists in a circular region of radius \( a \) and is
W
directed into the plane of the paper as shown in the figure. The magnitude of the induced electric field at a point \( \mathrm{P} \), a distance \( r \) from the centre of the circular region
(1) Increases with \( r \)
(2) Decreases with \( r \)
(3) Decreases as \( \frac{1}{r_{2}} \)
(4) Zero
(4) (D) (D) (B) (a)
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