There is a long cylinder of radius R hav...

There is a long cylinder of radius R having a cylindrical cavity of radius `R//2` as shown in the figure. Apart from the cavity, the entire space inside the cylinder has a uniform mag- netic field parallel to the axis of the cylinder. The magnetic field starts changing at a uniform rate of `(dB)/(dt) = kT//s`. Find the induced electric field at a point inside the cavity.

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