What happens when a rectangular loop is dropped into a field of uniform, magnetic field B extending to infinity?(adsbygoogle = window.adsbygoogle || []).push({});

The loop has a mass m and its resistance is R.

It has length L, breadth b, L tending to infinity.

Gravity is present in downward direction.

The loop is dropped such that emf is induced across one breadth.

Emf induced = Bvb

Current = Bvb/R.

Force net = mg - Bvb*b*B/R

accn = dv/dt = g - B^2vb^2/mR

Integrating an expression in log is obtained which does not match the reqd answer given in a book.

Is the method correct?

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# Homework Help: Problem on EMI

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