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4.5.6a Construction and operation of a transformer

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Question 77

A 240 V power supply and a 100% efficient transformer are used to power a 12 V, 48 W lamp.

What is the current in the power supply?

A

0.20 A0.20\text{ A}0.20 A

B

4.0 A4.0\text{ A}4.0 A

C

5.0 A5.0\text{ A}5.0 A

D

20 A20\text{ A}20 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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