Power in circuits (Edexcel GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is power?
What is power?
The rate at which energy is transferred
What does power tell us about work done?
What does power tell us about work done?
The rate at which work is done
What is the unit of power?
What is the unit of power?
Watt (W)
How is power related to current?
How is power related to current?
Directly proportional
How is power related to voltage?
How is power related to voltage?
Directly proportional
How is power loss related to current?
How is power loss related to current?
Proportional to the square of current
Which formula relates energy transferred, power, and time?
Which formula relates energy transferred, power, and time?
What is the formula for calculating power from energy transferred and time?
What is the formula for calculating power from energy transferred and time?
What is the unit of energy transferred?
What is the unit of energy transferred?
Joules (J)
What unit must time be measured in when using the power formula?
What unit must time be measured in when using the power formula?
Seconds (s)
A toaster uses 700J of energy in 50s. What is its power?
A toaster uses 700J of energy in 50s. What is its power?
14W
An engine does 4500J of work in 1.5 minutes. What is its power?
An engine does 4500J of work in 1.5 minutes. What is its power?
50W