Physics
Grade-10
Easy
Question
A bar magnet moves towards two identical parallel circular loops with a constant velocity v as shown in fig.
- The induced current in both the loops will be zero
- The induced current in both the loops will be zero
- The induced current in A is more than that in B
- The induced current is the same in both the loops
Hint:
Since A is nearer the magnet, its flux change rate will be greater.
The correct answer is: The induced current in A is more than that in B
When a magnet is moved through the loops A and B with v velocity, the induced current in A is more than that of B.
- When the magnet moves towards two identical loops in v velocity, it creates electromagnetic induction in both loops.
- As a result, both A and B loops produce a flow of current.
- The current flow in the loop A will be more than that of loop B, as the loop A creates stronger magnetic field.
- The direction of the current produced in both A and B will be the same. So they'll be drawn to one another.
- Since A is nearer the magnet, its flux change rate will be greater. As a result, current in A is increased.
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