Question

write the expression for equivalent magnetic moment of a planer current loop of area a,having n turns and carrying current i.use the expression to find the magnetis dipole moment of a revolving electron

Answer 1

The equivalent magnetic moment M of a planar current (= i ) carrying conductor loop of area A and n turns is

M = n i A.

If an electron of charge e is revolving with a frequency f in a loop of radius R then:

The equivalent current i = e * f

Turns = 1

Area of the loop = pi R^2

So the equivalent magnetic moment

M = 1 * e f * pi R^2

M = pi e f R^2.

Answer 2

Explanation:

M=pie f R^2

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