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Give the expression for mutual inductanc...

Give the expression for mutual inductance between a the pair of coaxial solenoids of same length. Give the meaning of the symbols used.

Text Solution

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`M_(12)-M_(21)=(mu_0mu_rN_1N_2A_1)/l`
Where, `N_1,N_2` represent number of turns in coil (1) and (2) and `A_1` represents area of cross section of the inner solenoid.
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