Electrical power (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does electrical power measure?
What does electrical power measure?
How fast energy changes to other forms
What does one watt equal?
What does one watt equal?
One joule per second
Which equation should you use when you know current and voltage?
Which equation should you use when you know current and voltage?
Which equation should you use when you know current and resistance?
Which equation should you use when you know current and resistance?
Which equation calculates power from energy transferred and time taken?
Which equation calculates power from energy transferred and time taken?
A device transfers 300,000 J in 50 s. What is its power?
A device transfers 300,000 J in 50 s. What is its power?
6000 W
An appliance uses 20 A current at 230 V. What power does it consume?
An appliance uses 20 A current at 230 V. What power does it consume?
4600 W
What power is dissipated when 5 A flows through 40 Ω resistance?
What power is dissipated when 5 A flows through 40 Ω resistance?
1000 W
In the equation , what does mean?
In the equation , what does mean?
Current multiplied by itself
A device has 2400 W power and 150 Ω resistance. Find the current using .
A device has 2400 W power and 150 Ω resistance. Find the current using .
4 A