Energy Transfers (AQA GCSE Physics Combined Science): 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?
What is power?
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 resistance and what else?
Power loss is proportional to resistance and what else?
The square of the current
Which formula relates energy transferred, power, and time?
Which formula relates energy transferred, power, and time?
What unit is power, , measured in?
What unit is power, , measured in?
Watts, W
What unit is energy transferred, , measured in?
What unit is energy transferred, , measured in?
Joules, J
What unit must time, , be in for power calculations?
What unit must time, , be in for power calculations?
Seconds, s
A toaster uses 700J in 50s. What is its power?
A toaster uses 700J in 50s. What is its power?
14 W
An engine does 4500J of work in 90s. What is its power?
An engine does 4500J of work in 90s. What is its power?
50 W
How many seconds are in 1.5 minutes?
How many seconds are in 1.5 minutes?
90 seconds