A solenoid is placed inside another solenoid, the length of both being equal carrying same magnitude of current. The parameters like radius and number of turns are in the ratio 1:2 for the two solenoids. The mutual inductance on each other would be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
We have, 
Here, S is area of inner solenoid. So, 
and S are same for both solenoids.
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