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Inside a long solenoid wounded with 300 ...

Inside a long solenoid wounded with 300 turns/metre, an iron is placed. An iron rod is 0.2 m long 10 mm in diameter and of permeability 103. The magnetic moment of the rod, if 0.5 A of current is passed thrugh the rod is :

A

2.256 SI unit

B

1.335 SI unit

C

3.664 SI unit

D

1.664 SI unit

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The correct Answer is:
A
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MODERN PUBLICATION-UNIT TEST -06-Multiple Choice Questions
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