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4.2.5 Electrical energy and electrical power

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Question 30

Cables transmit electrical power from the output of the transformer at a power station to the input of the transformer at a substation.

The power at the output of the transformer at the power station is 300 MW300\text{ MW}300 MW.

Which combination of potential difference at the power station transformer output and thickness of the cables results in the greatest power loss in the transmission cables?

A

150 kV150\text{ kV}150 kV and thin

B

150 kV150\text{ kV}150 kV and thick

C

300 kV300\text{ kV}300 kV and thin

D

300 kV300\text{ kV}300 kV and thick

Markscheme

4.2.5 Electrical energy and electrical power Questions

  1. IGCSE
  2. /Physics
  3. /4.2.5 Electrical energy and electrical power

69 exam-style questions on CIE IGCSE Physics 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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