Current Electricity and Electrical InstrumentHard
Question
Two concentric coplaner circular loop have radius r1 and r2 respectively (r2 > r1). If a current of I1 flows through the smaller loop then the flux linked with bigger loop is φ2. If a current of I2 flow through the bigger loop then the flux linked with smaller loop is φ1 then 
is equal to :-
is equal to :-Options
A.I1/I2
B.I2/I1
C.r1/r2
D.r2/r1
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