An aluminium ring B faces an electromagnet A. The current I through A can be altered. Then

Question

An aluminium ring B faces an electromagnet A. The current I through A can be altered. Then (A) Whether I increases or decreases, B will not experience any force (B) If I decreases, A will repel B (C) If I increases, A will attract B (D) If I increases, A will repel B

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/a42ab735976558ff0973557feb258ed0-.png" /> If current through A increases, crosses (X) linked with coil B increases, hence anticlockwise current induces in coil B. As shown in figure, both the current produce repulsive effect.

Q. An aluminium ring $B$ faces an electromagnet $A$ . The current $I$ through $A$ can be altered. Then

Whether $I$ increases or decreases, $B$ will not experience any force

If $I$ decreases, $A$ will repel $B$

If $I$ increases, $A$ will attract $B$

If $I$ increases, $A$ will repel $B$

If current through $A$ increases, crosses $(X)$ linked with coil $B$ increases, hence anticlockwise current induces in coil $B$ . As shown in figure, both the current produce repulsive effect.

Q. An aluminium ring B faces an electromagnet A. The current I through A can be altered. Then

Whether I increases or decreases, B will not experience any force

If I decreases, A will repel B

If I increases, A will attract B

If I increases, A will repel B