Power (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does power measure in physics?
What does power measure in physics?
Rate at which work is done
What is the formula for power in terms of work and time?
What is the formula for power in terms of work and time?
When force and velocity are in the same direction, what is the power formula?
When force and velocity are in the same direction, what is the power formula?
What is one watt equal to?
What is one watt equal to?
One joule per second
Approximately how many watts equal one horsepower?
Approximately how many watts equal one horsepower?
750 watts
When does negative power occur?
When does negative power occur?
When force and velocity oppose each other
What is the power when a forklift holds a crate stationary?
What is the power when a forklift holds a crate stationary?
0 W
What does a machine's power rating indicate?
What does a machine's power rating indicate?
Maximum rate at which it can do work
A force of 10 N moves a box at 1 m/s. What is the power required?
A force of 10 N moves a box at 1 m/s. What is the power required?
10 W