A magnetic field exists only in the annulus a<r<2a and is B(r,t)=kt/r in the axial direction. Determine the induced electric-field magnitude at r=3a.

Physics · Electromagnetic Induction · electric field due to changing magnetic field

JEE MainsNEET

A magnetic field exists only in the annulus a<r<2a and is B(r, t)=kt/r in the axial direction. Determine the induced electric-field magnitude at r=3a.

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