First slide

Inductance

Question

Identify the factor on which self-inductance of a coil does not depend.

Easy

A

Number of turns
B

Area of cross section
C

Permeability of the core material
D

The permittivity of the core material

Solution

Self-inductance is directly proportional to the number of turns and the area of cross-section. The self-inductance of a solenoid increases μ_r times if it is wound over an iron core of relative permeability μ_r.

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