Electrical Power (OCR GCSE Physics A (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 defined as?
What is power defined as?
The rate of energy transfer
What is the unit of power?
What is the unit of power?
Watt (W)
How is power related to current and voltage?
How is power related to current and voltage?
Directly proportional to both
Power loss is proportional to the square of what?
Power loss is proportional to the square of what?
Current
Which formula correctly represents energy transferred?
Which formula correctly represents energy transferred?
What unit is energy transferred measured in?
What unit is energy transferred measured in?
Joules (J)
A device uses 600J in 30s. What is its power?
A device uses 600J in 30s. What is its power?
20 W
Which equation relates power to work done?
Which equation relates power to work done?
When using power formulas, what unit must time be in?
When using power formulas, what unit must time be in?
Seconds
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?
30 W