Obtain the Expression for Mutual Inductance of a Pair of Long Coaxial Solenoids - Physics

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Obtain the expression for mutual inductance of a pair of long coaxial solenoids each of length l and radii r1 and r2 (r2 >> r1). Total number of turns in the two solenoids are N1 and N2, respectively.

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Suppose a current i is passed through the inner solenoid S1.

A magnetic field B=μ0n1i is produced inside S1 , whereas the field outside it is zero.

The flux through each turn S2 is Bπr12=μ0n1iπr12

The total flux through all the turns in a length l of S2 is



Concept: Solenoid and the Toroid - the Solenoid
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2013-2014 (March) All India Set 1

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