ElectroMagnetic InductionHard
Question
Two circular coils A and B are facing each other as shown in figure. The current i through A can be altered
Options
A.there will be repulsion between A and B if i is increased
B. there will be attraction between A and B if i is increased
C.there will be neither attraction nor repulsion when i is changed
D.attraction or repulsion between A and B depends on the direction of current. It does not depend whether the current is increased or decreased.
Solution
The repulsion is to resist the increasing magnetic flux in coil B.
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