Practicing Success
Case : Read the passage and answer the question(s). Let us consider a straight conductor moving in a uniform and time-independent magnetic field. Figure shows a rectangular conductor PQRS in which the conductor PQ is free to move. The rod PQ is moved towards the left with a constant velocity v as shown in the figure. PQRS forms a closed circuit enclosing an area that changes as PQ moves. The length RQ = x and RS = l and the magnetic flux is ΦB enclosed by the loop PQRS. |
A charge q is present at the center of the rod PQ. Another charge q' is present at the end P of the rod PQ. What is the relation of force experienced by them? |
Force on q is twice that on q' Force on q' is twice that on q Force depends upon charges q and q' Force on q is same as that on q' |
Force on q is same as that on q' |
All the charges on PQ experience same force in magnitude and direction. F = qvB |