There are two long co–axial solenoids of same length λ . The inner and outer coils have radii r 1 and r 2 and number of turns per unit length n 1 and n 2 , respectively. The ratio of mutual inductance to the self-inductance of the inner-coil is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Mutual inductance 
Self-inductance of inner solenoid 
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