1.

A solenoid with N loops of wire tightly wrapped around an iron-core is carrying an electric current I. If the current through this solenoid is reduced to half, then what change would you expect in inductance L of the solenoid.

Answer»

Given: I' = \(\frac{I}{2}\)

Inductance, L  = μo \(\frac{N^2}{e}\).A

l : length of solenoid

N: number of lines

A: area of cross- section of solenoid

Since, 'I' is independent of current, so there is no change in the inductance of the solenoid.

Remains same.



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