Published by:
CGP EDU Academic Team
Published on: August 22, 2026
There are two long co - axial solenoids of same length I. The inner and outer coils have radii 
and 
and number of turns per unit length 
and 
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:
D
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