Skip to content

Course home

Sign up

13.2 Transformers and the National Grid

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
Question 41
F

A transformer is 100% efficient. The primary potential difference is 0.24 kV0.24\ \mathrm{kV}0.24 kV. The secondary supplies a current of 600 mA at 20 V.

What is the primary current in milliamperes?

[1]
A

0.050 mA0.050\ \mathrm{mA}0.050 mA

B

500 mA500\ \mathrm{mA}500 mA

C

50 mA50\ \mathrm{mA}50 mA

D

7200 mA7200\ \mathrm{mA}7200 mA

Markscheme

13.2 Transformers and the National Grid Questions

  1. GCSE
  2. /Physics
  3. /13.2 Transformers and the National Grid

108 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid, covering 13.2.1 Transformers and induction, 13.2.2 The transformer turns-ratio equation, 13.2.3 The National Grid, 13.2.4 The transformer power equation, and 13.2.5 Advantages of high-voltage transmission. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank