Edexcel IGCSE Physics 6 19p Transformer Turns Ratio Questions

Practise using transformer turns ratio with primary and secondary voltages, coil turns and tables to calculate unknown values with units.

Exam points

state or rearrange Np/Ns = Vp/Vs using clear primary and secondary labels
calculate an unknown voltage or coil turns from table data using the turns ratio
check the final transformer answer has a sensible unit

[Maximum number: 1]

The diagram shows a step-down transformer.

State how the primary coil of the transformer can be changed to increase the output voltage.

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