The Inductance Of An Iron Core Coil Decreases If

Answer: Option A. The number of turns is decreased.

The inductance of an iron core coil decreases if the number of turns is decreased.

Solution

The inductance of an iron core coil is 

L=μN²A/l

Where, 

μ→Permiability of an iron core

N→Number of turns of a coil

A→Cross section of the area of the coil

l→Length of the iron core

The inductance of the coil is directly proportional to the square of the number of turns of the coil. The inductance of an iron core coil decreases if the number of turns is decreased.

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