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CUET
Physics
Electromagnetic Induction
A short solenoid of radius a and n1 number of turns per unit length and length L is kept coaxially inside a very long solenoid of radius b and n2 number of turns per unit length. What is the mutual inductance of the system.
µ0πb2n1n2L
µ0πa2n1n2L2
µ0πa2n1n2L
µ0πb2n1n2L2
