Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A long solenoid with 1000 turns/m has a core material with relative permeability 500 and volume 
. If the core material is replaced by another material having relative permeability of 750 with same volume maintaining same current of 
in the solenoid, the fractional change in the magnetic moment of the core would be approximately 
. Find the value of 
.
Text Solution
Verified by ExpertsThe correct answer is:
250
(250) 
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