CAIE IGCSE Physics 4.5.6.3 Transformer Relation Vp Vs Np Ns Questions
Use the transformer turns-ratio relationship to calculate voltages, turns and power-transmission values.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- calculate transformer turns ratio from primary and secondary turns
- calculate primary or secondary voltage using the transformer turns-ratio equation
- apply transformer ratios to step-up, step-down and power-transmission problems
CAIE IGCSE Physics 4.5.6.3 Transformer Relation Vp Vs Np Ns Questions question 1
[Maximum number: 1]
A transformer has 400 turns on the primary coil connected to the 240 V mains supply.
There are two secondary coils to serve different parts of a television. Secondary coil 1 has 2500 turns and secondary coil 2 has 20 turns.
Which row is correct?
p.d. across secondary coil 1/V
p.d. across secondary coil 2/V
12
3.2
1500
12
4200
12
4200
33
B
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