Power in circuits (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is power defined as?
What is power defined as?
The rate at which energy is transferred
What is the unit of power?
What is the unit of power?
Watt (W)
Power is directly proportional to which two quantities?
Power is directly proportional to which two quantities?
Current and voltage
Power loss is proportional to the square of which quantity?
Power loss is proportional to the square of which quantity?
Current
Which formula correctly shows energy transferred in terms of power?
Which formula correctly shows energy transferred in terms of power?
What is the unit for energy transferred?
What is the unit for energy transferred?
Joules (J)
A toaster uses 700J of electricity in 50 seconds. What is its power?
A toaster uses 700J of electricity in 50 seconds. What is its power?
14 W
What unit must time be measured in for power calculations?
What unit must time be measured in for power calculations?
Seconds (s)
Which formula shows energy transferred using charge?
Which formula shows energy transferred using charge?
Power loss is proportional to which component property?
Power loss is proportional to which component property?
Resistance
A car engine does 4500J of work in 90 seconds. What is its power?
A car engine does 4500J of work in 90 seconds. What is its power?
50 W
Power also tells us the rate at which what is done?
Power also tells us the rate at which what is done?
Work