The figure shows a circular area of tthe radius $R$ where a uniform magnetic field $\overset{\to}{B}$ is going into the plane of the paper and increasing in magnitude at a constant rate. In that case, which of the following graphs, drawn schematically, correctly shows the variation of the induced electric field $E ( r )$ ?

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The figure shows a circular area of tthe radius R where a uniform magnetic field → B is going into the plane of the

Quantrex Academy · Accepted Answer

Correct answer: A.

E = (dϕ)/(dt) = A(dB)/(dt) for r for r > R , E(2 ) = π R ^ 2 (dB)/(dt) ⇒ Eα(1)/(r)

The figure shows a circular area of tthe radius R where a uniform...

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