A uniform but time-varying magnetic field B(t) exists in a circular region of radius a and is directed into the plane of the paper, as shown. The magnitude of the induced electric field at point P at a distance r from the centre of the circular region - VgyanHub

Question:

A uniform but time-varying magnetic field B(t) exists in a circular region of radius a and is directed into the plane of the paper, as shown. The magnitude of the induced electric field at point P at a distance r from the centre of the circular region

Screenshot 2024-12-28 174831

Options :

(a) Is zero
(b) Decreases as 1/r
(c) Increases as r
(d) Decreases as 1/r^2

Answer :

(b) Decreases as 1/r

Answer Steps :

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