Power (HSC SSCE Physics): 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?
What is power?
The rate at which work is done
What does one watt represent?
What does one watt represent?
Transfer of 1 joule of energy per second
Which formula correctly defines power?
Which formula correctly defines power?
How do you calculate total energy change from power and time?
How do you calculate total energy change from power and time?
On an energy-time graph, what does the gradient represent?
On an energy-time graph, what does the gradient represent?
Power
What formula relates power to force and velocity?
What formula relates power to force and velocity?
A 100 W light bulb transforms how much electrical energy per second?
A 100 W light bulb transforms how much electrical energy per second?
100 J
If the same work is done in more time, what happens to power?
If the same work is done in more time, what happens to power?
Power decreases
How does air resistance change with a car's speed?
How does air resistance change with a car's speed?
Increases with square of velocity
On a power-time graph, what does the area under the line represent?
On a power-time graph, what does the area under the line represent?
Total energy transferred