Skip to content

Course home

Sign up

4.5.6a Construction and operation of a transformer

EasyMedium
12345678910111213141516171819202122232425262728293031323334353637383940414243
Question 4

A transformer has 4000 turns on the primary coil and 200 turns on the secondary coil.

The output of the secondary coil is 12 V a.c. and is connected to a lamp. The transformer is 100% efficient.

The lamp produces a power of 60 W.

What is the current in the primary coil?

A

0.25 A0.25\text{ A}0.25 A

B

0.50 A0.50\text{ A}0.50 A

C

2.5 A2.5\text{ A}2.5 A

D

5.0 A5.0\text{ A}5.0 A

Markscheme

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.

Question bank