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Two identical circular coils $A$ and $B$ are kept on a horizontal tube side by side without touching each other. If the current in the coil $A$ increases with time, in response, the coil $B$
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is repelled
As the current in coil $A$ changes, the magnetic flux linked with coil $B$ changes, hence as a result current induces in coil $B$. The direction of induced current in coil $B$ is opposite to that of the direction of current in coil $A$ as shown in figure
Due to currents in opposite directions in the near by sides of the coil, the coil $B$ is repelled.
Due to currents in opposite directions in the near by sides of the coil, the coil $B$ is repelled.
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