Describe and explain the way the student identifies which piece is not magnetised, using only the three steel pieces.
(b(i))[3]
Calculate the input current for the transformer.
(b(ii))[3]
Draw a labelled diagram of a step-down transformer. In the labels, give a suitable material for each component.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Bring the ends of the steel pieces together and note attraction/repulsion” …