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Ganesh
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What happens when a rectangular loop is dropped into a field of uniform, magnetic field B extending to infinity?
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?
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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