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A cylindrical space of radius R is fille...

A cylindrical space of radius R is filled with a uniform magnetic induction parallel to the axis of the cylinder. If B charges at a constant rate, the graph showin the variation of induced electric field with distance r from the axis of cylinder is

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Verified by Experts

The correct Answer is:
A
`EMF=-(dphi)/(dt)=-(dBpir^(2))/(dt)=-pir^(2)(dB)/(dt)` or `E=((EMF)/r)=((pidB)/(dt))r` or `Epropr` for `rleR`. `rArr E prop 1/r` for `r gt R`.
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