A solenoid 30 cm long is made by winding...

A solenoid 30 cm long is made by winding 2000 loops of wire on an iron rod whose cross-section is `1.5cm^(2)`. If the relative permeability of the iron is 600. what is the self-inductance of the solenoid?

1.5 H

2.5 H

3.5 H

0.5 H

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