derive the expression for the mutual inductance of two long coaxial solenoids of same length l having radii r1 and r2 (r2>r1 and l>>r2). is it the derivation for mutual inductance due to two solenoids?
Asked by Riya Satish | 29th Mar, 2011, 11:19: AM
Suppose a current i is passed through the inner solenoid . A magnetic field is produce inside whereas field outside it is zero.
is permeability of vaccum.
Let and be the no of turns it each solenoid of equal length l.
Therefore, flux through each turn of solenoid is
The total flux through all the turns in a length l of is
And we know that where M is the mutual inductance.
Therefore mutual inductance of two long coaxial solenoids of same lenth is
Answered by | 16th Apr, 2011, 02:17: AM
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