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If you increase the number of turns of wire on a solenoid, which of the following...

If you increase the number of turns of wire on a solenoid, which of the following is necessarily true?

The inductance is increased.
The inductance is decreased.
The current is increased.
The current is decreased.
The voltage in increased.
The voltage is decreased.
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Answer #1

The correct Ans:

The inductance is increased.

Because inductance of a coil is guven by:

L = N^2 u A/l

where, N is the number of turns ; u is the relative permeability ; A is the area of cross section ; l is the length of the solenoid.

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