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 replusion between `A` and `B` dependes on the direction of current. If does not depend wheter the current is increase or decreased

Answer

A

Explanation

with rise in current in coil `A` flux through `B` increases. According to Lenz's law repulsion occures between `A` and `B`.