A step-down transformer converts $240\,\text{V}$ a.c. into $12\,\text{V}$ a.c. The primary coil has $600$ turns. How many turns does the secondary coil have?
- A$20$
- B$30$
- C$600$
- D$12\,000$
Physics 5054 · O Level · The transformer
Physics 5054 · O Level · The transformer
A step-down transformer converts $240\,\text{V}$ a.c. into $12\,\text{V}$ a.c. The primary coil has $600$ turns. How many turns does the secondary coil have?