Electrical power
3 marks · NormalAn electric kettle operates from a 230 V supply and the current in the kettle is 10 A. Calculate the power of the kettle.
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2300 W (±1)
Must show: P = I × V, Correct substitution, Correct unit W
Common mistakes: Using wrong unit (A or V instead of W)
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Marking points
M1 · 1 mark · Writes or recalls P = I × V.
M2 · 1 mark · Substitutes I = 10 A, V = 230 V correctly.
A1 · 1 mark · Calculates power as 2300 W (accept 2,300).
Worked solution