(a)[1]
Explain why the ammeter reading is zero when wire XY is stationary.
(b)[3]
In Table 7.1, tick one box to show the direction in which wire XY moves and explain your answer.
(c(i))[1]
State what is seen on the ammeter when wire XY is moved in the opposite direction from part (b).
(c(ii))[1]
State what is observed on the ammeter when wire XY moves in the same direction as part (b), but faster.