Physics · May / June 2021 · Paper 11 · Question 36
5054The transformer
A student uses a transformer to light a filament lamp using a 230 V a.c. supply. The lamp has a maximum voltage rating of 6.0 V. [diagram: 230 V a.c. supply connected to primary coil of 300 turns; secondary coil of 20 turns connected to a filament lamp] What happens when the circuit is switched on?
- AThe lamp does not light at all.
- BThe lamp lights at normal brightness.
- CThe lamp lights dimly.
- DThe lamp lights up brightly and then goes out.
As printed in the paper
Show the answer
Correct answer: D. The lamp lights up brightly and then goes out.
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.