An iron rod of volume 10-3m3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm. If a current of 0.5A is passed through the solenoid, then the magnetic moment of the rod will be:
Option: 1 500 x 102 Am2
Option: 2 0.5 x 102 Am2
Option: 3 50 x 102 Am2
Option: 4 5 x 102 Am2
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