(a)[1]
On Fig. 7.1, place an arrow to show the direction of current in the copper wire.
(b)[2]
Explain why the copper wire travels along the copper rods.
(c)[2]
Name two different devices that use this effect.
Physics 5054 · O Level · Forces on a current-carrying conductor
Forces on a current-carrying conductor — practice question
Fig. 7.1 shows a copper wire resting on two copper rods in the magnetic field between the poles of a magnet.
Crocodile clip A is in contact with the positive terminal of the battery. As a result, the copper wire starts to move.