Question

Consider the situation shown in the figure. If the current $I$ in the long straight wire $XY$ is increased at a steady rate then the induced EMFs in loops $A$ and $B$ will be

• A. clockwise in $A$ , anticlockwise in $B$
• B. anticlockwise in $A$ , clockwise in $B$
• C. clockwise in both $A$ and $B$
• D. anticlockwise in both $A$ and $B$

Answer 1

Answer: (A)

Both coils oppose the increase in current in straight wire, due to which change in magnetic flux is increased through the two coils. Hence current in coil $A$ is clockwise and current in coil $B$ is anticlockwise