The coils on the iron core have coefficient of coupling ________.

Question

Question

This question was previously asked in

KVS TGT WET (Work Experience Teacher) 8 Jan 2017 Official Paper

Answer 1

The coils on the iron core have the coefficient of coupling equal to unity because of the iron core is magnetically tightly coupled

Important:

The coupling coefficient k is a measure of the magnetic coupling between two coils.

\(K = \frac{M}{{\sqrt {{L_1}{L_2}} }}\)

0 ≤ K ≤ 1

K < 0.5 loosely coupled

K > 0.5 tightly coupled

K = 1 magnetically tightly coupled or ideal coupled