The correct position for a fuse in the diagram above is

If current flows in the direction of the arrows in the solenoid above, the north pole is at

In the a.c circuit above, the current value is

A handbag containing some load weighing 162N is carried by two students each holding the handle of the bag next to him. If each handle is pulled \( 60^{\circ} \) to the vertical, find the force on each student's arm