Fig. 11.1 presents a transformer that can deliver two distinct output voltages from a $240\text{ V}$ mains a.c. supply. In this transformer, the primary coil contains 5000 turns, while the secondary coil has 250 turns between P and R.
(a)[1]
State the name given to this type of transformer.
(b)[2]
State which metal is used for the core and explain why it is appropriate.
(c(i))[3]
Calculate the output voltage across P and Q.
(c(ii))[2]
Compare the output voltage between P and Q with the output voltage between P and R. Explain your answer.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “a step-down transformer” …