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4.5.6a Construction and operation of a transformer

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Question 53

A step-down transformer is 100% efficient. It has an input voltage of 230 V a.c. and an output voltage of 11.5 V a.c.

The current in the primary coil is 0.20 A.

What is the current in the secondary coil?

A

0.010 A0.010\text{ A}0.010 A

B

0.20 A0.20\text{ A}0.20 A

C

4.0 A4.0\text{ A}4.0 A

D

40 A40\text{ A}40 A

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4.5.6a Construction and operation of a transformer Questions

  1. IGCSE
  2. /Physics
  3. /4.5.6a Construction and operation of a transformer

136 exam-style questions on CIE IGCSE Physics 4.5.6a Construction and operation of a transformer. Each one has a worked solution and a mark scheme showing where the marks go.

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