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WorksheetsMains Electricity
Total questions: 10
Worksheet time: 10mins
An electric kettle is commonly used to heat up water at home. The heating element used is nichrome wire and not copper. Which of the following reasons best explains why nichrome is used instead of copper?
Nichrome conducts more current than copper, so more heat can be generated.
Nichrome has higher resistance than copper, so more heat can be generated.
Nichrome has higher voltage than copper, so more heat can be generated.
Nichrome are cheaper than copper, so it is more economical.
Which wire is connected to a fuse in a plug?
Live
Neutral
Earth
Positive
Which one is a Fuse?
What is another Equation for Power?
Power = Potential Difference x Current
Power = Potential Difference / Current
Power = Current / Potential Difference
What are the Equations for Energy Transferred? Choose 2
Energy Transferred = Power x Time
Energy Transferred = Power / Time
Energy Transferred = Charge Flow x Potential Difference
Energy Transferred = Charge Flow / Potential Difference
