A circular loop of radius 0.3 cm lies parallel to a much bigger circular loop of radius 20 cm. The center of the small loop is on the axis of the bigger loop. The distance between their centers is 15 cm. If a current of 2.0 A flows through the smaller loop, then the flux linked with bigger loop is:
Text Solution
Verified by ExpertsThe correct answer is:
A
As field due to current loop 1 at an axial point
Flux linked with smaller loop 2 due to 
is
The coefficient of mutual inductance between the loops is
Flux linked with bigger loop 1 is
Substituting the given values, we get
weber
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