Lesson 6.1.1.4
6.1.1.4 Power Quiz: AQA Combined Science, Unit 18
20 questions
In partnership with Revision Ninja
Lesson 6.1.1.4, Power: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 18: Energy, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
Power is defined as the rate of energy transfer or the rate of what?
- Work done
- Force applied
- Distance moved
- Charge flow
-
What is the unit of power?
- Ohm
- Newton
- Watt
- Joule
-
One watt is equal to how many joules per second?
- 1 joule per second
- 0.1 joule per second
- 10 joules per second
- 1000 joules per second
-
Which pair of equations gives power?
- P = E x t and P = W x t
- P = V / I and P = I / R
- P = m g and P = m v
- P = E / t and P = W / t
-
Which quantity is measured in seconds?
- Power
- Work
- Time
- Energy
-
Which setup does the specification use to illustrate the concept of power?
- Motors lifting weights
- Bulbs emitting light
- Springs being stretched
- Brakes stopping cars
-
If two motors lift identical weights through the same height, which has greater power?
- The heavier motor
- Both equal power
- The slower motor
- The faster motor
-
What is the unit of energy transferred?
- Watt
- Metre
- Joule
- Second
-
A motor transfers 600 J in 20 s. What is its power?
- 0.03 W
- 30 W
- 12000 W
- 620 W
-
A lift does 1500 J of work in 30 s. What is its power?
- 0.02 W
- 50 W
- 1530 W
- 45000 W
-
A 60 W lamp is on for 10 s. How much energy is transferred?
- 70 J
- 600 J
- 60 J
- 6 J
-
A 2000 W kettle runs for 3 minutes. How much energy does it transfer?
- 360000 J
- 6000 J
- 120000 J
- 36000 J
-
An engine does 8000 J of work each second. What is its power?
- 8000 W
- 8 W
- 80000 W
- 800 W
-
Motor A takes 4 s and Motor B takes 8 s to transfer 1200 J. What is Motor A's power advantage?
- Four times powerful
- Half as powerful
- Twice as powerful
- Equal power
-
A 1 kW heater runs for 2 hours. How much energy does it transfer?
- 2000 J
- 7200 J
- 3.6 x 10^6 J
- 7.2 x 10^6 J
-
A 50 W device is used for 5 minutes. How much energy does it transfer?
- 150000 J
- 3000 J
- 15000 J
- 250 J
-
If the power of a device doubles and the time it runs halves, how does the energy transferred change?
- It halves
- It is unchanged
- It quadruples
- It doubles
-
A machine has a power of 4 W and runs for 25 s. How much energy does it transfer?
- 6.25 J
- 100 J
- 1000 J
- 29 J
-
Why is power measured as a rate instead of a total amount?
- It involves mass
- It involves distance
- It involves volume
- It involves time
-
A power of 1500 W is the same as how many kilowatts?
- 15 kW
- 1.5 kW
- 0.15 kW
- 150 kW
Related quizzes
- Eukaryotes and prokaryotes Quiz · 4.1.1.1 · 20 questions
- Principles of organisation Quiz · 4.2.1 · 20 questions
- Communicable (infectious) diseases Quiz · 4.3.1.1 · 20 questions
- Photosynthetic reaction Quiz · 4.4.1.1 · 20 questions
- Homeostasis Quiz · 4.5.1 · 20 questions
- Sexual and asexual reproduction Quiz · 4.6.1.1 · 20 questions
- Communities Quiz · 4.7.1.1 · 20 questions
- Atoms, elements and compounds Quiz · 5.1.1.1 · 20 questions
- Animal and plant cells Quiz · 4.1.1.2 · 20 questions
- The human digestive system Quiz · 4.2.2.1 · 20 questions