(a)[3]
Calculate the current in the wire.
(b(i))[1]
On Fig. 9.1, draw arrows to show the direction of the magnetic field.
(b(ii))[1]
State what happens, if anything, to the direction of the force on the wire.
(c(i))[2]
State two ways of increasing the turning effect on the coil.
(c(ii))[2]
Describe and explain the effect of reversing the connections to the battery.