Physics, asked by harshubhat5057, 1 year ago

Derive an expression for it for a solenoid carrying current

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Answered by sachin27637
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Consider a solenoid of length 2l, radius a and having n turns per unit length. It is carrying a current I. ... This is the expression for magnetic field due to a solenoid on the axial line at a distance r from the centre. This magnetic field is also the field due to a bar magnet of magnetic moment m.

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