Saved Bookmarks
| 1. |
Three closed similar coils P, Q and R are placed such that their planes are parallel. In the coil P and R, current of same magnitude flows as shown in the figure. Coils Q and R are static while coil P is moved with a uniform speed towards Q, then(A) Clockwise current will be induced in coil Q, as seen by eye (B) Anti-clockwise current will be induced in coil Q, as seen by eye. (C) No current will flow in coil Q (D) Current induced in coil Q will be equal to P and R, but in opposite direction, hence net current in Q will be zero. |
|
Answer» Correct option (B) Anti-ciockwise current will be induced in coil Q, as seen by eye. Explanation: Coil P is moved with a uniform speed towards Q while R is static. Due to the current in P, magnetic field is from right to left. When P is moved towards Q, magnetic lines passing through Q (from right to left) will increase, i.e., magnetic flux passing through Q will increase. Therefore, current will be induced in Q. The induced current will have such a direction that it gives a magnetic field opposite to that passing through Q due to current in P. Thus, anticlockwise current will be induced in coil Q, opposite to the direction of current in coil P. |
|