Identify the factor on which self-inductance of a coil does not depend.
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a
Number of turns
b
Area of cross section
c
Permeability of the core material
d
The permittivity of the core material
answer is D.
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Detailed Solution
Self-inductance is directly proportional to the number of turns and the area of cross-section. The self-inductance of a solenoid increases μr times if it is wound over an iron core of relative permeability μr.