A step-up transformer gives a $60\,\text{V}$ a.c. output when the a.c. input is $12\,\text{V}$. The secondary coil has $50$ turns. How many turns are on the primary coil?
- A$5$
- B$10$
- C$50$
- D$250$
Physics 0625 · IGCSE · Electromagnetic effects
Physics 0625 · IGCSE · Electromagnetic effects
A step-up transformer gives a $60\,\text{V}$ a.c. output when the a.c. input is $12\,\text{V}$. The secondary coil has $50$ turns. How many turns are on the primary coil?