Electrical Power (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is power?
What is power?
The rate of energy transfer
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 which power of current?
Power loss is proportional to which power of current?
Square of the current
Which formula correctly relates energy transferred, power, and time?
Which formula correctly relates energy transferred, power, and time?
Which formula shows energy transferred in terms of charge?
Which formula shows energy transferred in terms of charge?
What is the correct unit for energy transferred?
What is the correct unit for energy transferred?
Joules (J)
A device uses 900J of energy in 30s. What is its power?
A device uses 900J of energy in 30s. What is its power?
30W
An engine does 3600J of work in 2 minutes. What is its power?
An engine does 3600J of work in 2 minutes. What is its power?
30W
Power loss is proportional to what property of a circuit?
Power loss is proportional to what property of a circuit?
Resistance