Practice: Domestic electricity

OCR J249 — these questions are matched to your selected course.

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19 additional questions require GCSE Physics Premium access.

2 of 2 available questions match the selected filters. This session contains 2 questions.

Question 1 · 1 mark · Foundation · Recall · Single question

What is the main purpose of the earth wire in an appliance with a metal case?

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Question 2 · 1 mark · Foundation · Calculation · Single question

A 2.0 kW heater runs for 3.0 h. Calculate the electrical energy transferred in kWh.