Physics-
General
Easy
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
- is zero
- decreases as 1/r
- increases as r
- decreases as 1/r2
The correct answer is: decreases as 1/r
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