How does the self inductance of a coil change when an iron rod is introduced into it? Justify your answer in each case.

How does the self inductance of a coil change when an iron rod is intr

1.	How does the self inductance of a coil change when an iron rod is introduced into it? Justify your answer in each case.
Answer» Solution :Self-inductance of a coil, L= `mu_0n^2lA` On introducing the iron ROD into the coil, the self inductance will become L = `mu_0mu_rn^2lA` where `MU`, is the RELATIVE permeability of iron. since `mu_r`>1, self inductance will INCREASE.

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How does the self inductance of a coil change when an iron rod is introduced into it? Justify your answer in each case.

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