Question 356: Electromagnetic Induction

Question

Two coils of self inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is

Accepted Answer

Mutual inductance is given as,
M = K$$\sqrt {{L_1} 	imes {L_2}} $$
Now given, K = 1, L
1
= 2 mH, L
2
= 8 mH
$$ 	herefore $$ M = $$1 	imes \sqrt {2 	imes 8} $$ = 4 mH

Answer

16 mH

Answer

10 mH

Answer

6 mH

Answer

4 mH

Electromagnetic Induction

Two coils of self inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is

Choose the correct answer: