Published by:
CGP EDU Academic Team
Published on: August 23, 2026
An insulated wire is wound so that it forms a flat coil with 
turns. The radius of the innermost turn is 
, and of the outermost turn 
. If 20 mA current flow in it then the magnetic moment will be 
. The value of 
is 
.
Text Solution
Verified by ExpertsThe correct answer is:
A
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