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13.2 Transformers and the National Grid

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Which three main components make up a transformer?

A
  • Primary coil
  • Secondary coil
  • Soft iron core
B

A transformer's output has the same frequency as its input.

C
  • Primary current creates a changing magnetic field.
  • The core carries the field to the secondary.
  • The field induces an alternating potential difference.
D

For fixed transmitted power, the cable current is I=PVI=\dfrac{P}{V}I=VP​, while the cable's power loss is Ploss=I2R\boxed{P_{\mathrm{loss}}=I^{2}R}Ploss​=I2R​.

Card 1 of 20

13.2 Transformers and the National Grid Flashcards

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

20 flashcards on Edexcel GCSE Physics 13.2 Transformers and the National Grid: the key terms, definitions and equations you need to recall for Paper 1 and Paper 2.

Flashcards