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13.2 Transformers and the National Grid

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Question 40
F

A step-down transformer is 100% efficient and supplies an appliance.

Which statement compares the primary and secondary circuits?

[1]
A

The secondary current is smaller and the secondary power is equal.

B

The secondary current is larger and the secondary power is equal.

C

The secondary current is larger and the secondary power is larger.

D

The secondary current is smaller and the secondary power is smaller.

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.

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