Physics 0625 · IGCSE · Electromagnetic effects

Electromagnetic effects — practice question

A transformer is fitted with 400 turns on its primary coil and is connected to the $240\,\text{V}$ mains supply. It has two secondary coils for supplying different sections of a television. Secondary coil 1 contains 2500 turns and secondary coil 2 contains 20 turns. Which row is correct?

  • ASecondary coil 1: $12\,\text{V}$; Secondary coil 2: $3.2\,\text{V}$
  • BSecondary coil 1: $1500\,\text{V}$; Secondary coil 2: $12\,\text{V}$
  • CSecondary coil 1: $4200\,\text{V}$; Secondary coil 2: $12\,\text{V}$
  • DSecondary coil 1: $4200\,\text{V}$; Secondary coil 2: $33\,\text{V}$

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