(a(i))[2]
On Fig. 9.1, draw an arrow on each of the three plotting compasses B, C and D to indicate the direction of the magnetic field.
(a(ii))[1]
On Fig. 9.1, label the magnetic poles of the bar magnet with N and S.
(b)[2]
Describe one way to demagnetise a bar magnet.
(c(i))[2]
Draw the pattern of the magnetic field around the wire, and make the direction of the magnetic field clear.
(c(ii))[1]
State what effect reversing the current has on the magnetic field produced.