Energy Transfers (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What does electrical power measure?
What does electrical power measure?
Rate of energy transfer per second
What is the unit of electrical power?
What is the unit of electrical power?
Watts (W)
What does one watt mean?
What does one watt mean?
One joule transferred per second
Which equation calculates power from current and voltage?
Which equation calculates power from current and voltage?
Which equation uses current squared and resistance?
Which equation uses current squared and resistance?
Which equation calculates power from energy and time?
Which equation calculates power from energy and time?
An oven uses 30A at 230V. What is its power?
An oven uses 30A at 230V. What is its power?
6900 W
A 4A current flows through a 55Ω wire. What is the power?
A 4A current flows through a 55Ω wire. What is the power?
880 W
A device transfers 300000 J in 35 s. What is its power?
A device transfers 300000 J in 35 s. What is its power?
8571 W
What is the unit symbol for resistance?
What is the unit symbol for resistance?
Ω
When should you use ?
When should you use ?
When you know current and voltage
What does higher power indicate?
What does higher power indicate?
More energy per second transferred