Physics

Problem

An iron rod of volume

10^{-3} \text{ m}^3

and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod will be: a.

50 \times 10^2 \text{ Am}^2

5 \times 10^2 \text{ Am}^2

500 \times 10^2 \text{ Am}^2

0.5 \times 10^2 \text{ Am}^2

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