0625/04/SP/23 · question 1 of 1 in this topic
There are 8000 turns in the primary coil of the transformer. The primary coil is connected to a 240 V mains supply. A 6.0 V lamp connected to the secondary coil operates at full brightness.
Calculate the number of turns in the secondary coil.
Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.
Your answer
Suggested time: 3 min
A transformer has 8000 turns in the primary coil connected to a 240 V mains supply, and a 6.0 V lamp connected to the secondary coil operating at full brightness. The current in the lamp is 2.0 A. The transformer operates with 100% efficiency.
Calculate the current in the primary circuit.
Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.
Your answer
Suggested time: 3 min
0625/04/SP/23Cambridge IGCSE Physics 0625 · Specimen 2023 · Paper 4 · sit the whole paper