An iron rod of volume 10−3m3 and relative permeability 1000 is placed as core in a solenoid with10turnscm−1 . If a current of 0.5A is passed through the solenoid, then the magnetic moment of the rod will be :
Held on 5 Sept 2020 · Verified 6 Jul 2026.
50×102Am2
5×102Am2
500×102Am2
0.5×102Am2
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