A) 2 H
B) 3H
C) 4 H
D) 8H
Correct Answer: A
Solution :
Coefficient of mutual induction of two coils is equal to the number of magnetic flux \[h=\frac{R}{2},\,w=500N\] linkages in one coil when a unit current (i) flows in the other \[\therefore \] \[w=500\left( 1-\frac{1}{2} \right)\]henry Given, \[=\frac{500}{2}=250N\] \[g=g\left( 1-\frac{2h}{R} \right).\] Note: The coefficient of mutual induction of two coils in also equal to the numerical value of induced emf in one coil when rate of change of current in the other coil is unity.
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