Lesson 4.2.4.2
4.2.4.2 Energy transfers in everyday appliances Quiz: AQA Physics, Unit 2
20 questions
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Lesson 4.2.4.2, Energy transfers in everyday appliances: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 2: Electricity, written with Revision Ninja.
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The 20 questions
-
A 2000 W kettle is switched on for 3 minutes. How much energy does it transfer?
- 120000 J
- 666.7 J
- 6000 J
- 360000 J
-
A charge flow of 50 C passes through a device with a potential difference of 12 V. What energy is transferred?
- 6000 J
- 600 J
- 0.24 J
- 62 J
-
Which equation calculates energy transferred using charge flow and potential difference?
- E = Q V
- E = P t
- E = Q / t
- E = I R
-
When charge flows in a circuit, what is being done?
- Work
- Power only
- Potential
- Resistance
-
Into which main energy store does an electric fan motor primarily transfer energy?
- Chemical
- Thermal
- Kinetic
- Potential
-
A 1500 W heater runs for 30 minutes. How much energy is transferred?
- 90000 J
- 2700 J
- 750000 J
- 2700000 J
-
A device transfers 36000 J in 60 s. What is its power?
- 36000 W
- 0.6 W
- 216000 W
- 600 W
-
Which appliance transfers more energy when run for the same amount of time: 60 W lamp or 1200 W kettle?
- Neither
- Kettle
- Both equal
- Lamp
-
A current of 5 A flows through an appliance at 230 V for 10 s. How much energy is transferred?
- 11500 J
- 115 J
- 46000 J
- 2300 J
-
A current of 3 A flows through a component with 9 V across it for 20 s. What energy is transferred?
- 1620 J
- 180 J
- 540 J
- 27 J
-
What main energy transfer takes place inside a working toaster heating element?
- Electrical to thermal
- Thermal to electrical
- Electrical to kinetic
- Chemical to thermal
-
A 6 V cell drives a current of 0.25 A through a lamp for 40 s. How much energy is transferred?
- 60 J
- 6.25 J
- 240 J
- 1.5 J
-
A device is rated 2400 W and is on for 5 minutes. How much energy does it transfer?
- 8000 J
- 720000 J
- 12000 J
- 480000 J
-
Which domestic appliance typically has the highest power rating?
- Electric kettle
- Desktop computer
- Television
- LED lamp
-
A 500 W appliance runs for 4 hours and a 1000 W appliance runs for 2 hours. What can be said about the energy transferred?
- Both are zero
- Second is greater
- Both are equal
- First is greater
-
What are the primary energy stores involved when an electric motor works?
- Elastic to kinetic
- Kinetic to electrical
- Chemical to thermal
- Electrical to kinetic
-
A 230 V appliance draws a current of 2 A for 15 minutes. How much energy is transferred?
- 1800 J
- 27600 J
- 460 J
- 414000 J
-
Which equation gives electrical energy transferred using power and time?
- E = P x t
- E = t / P
- E = P + t
- E = P / t
-
What does a higher power rating indicate about an electrical appliance?
- Lower voltage needed
- Slower energy transfer
- Faster energy transfer
- Higher total efficiency
-
A 1200 W hairdryer is used for 0.5 minutes. How much energy is transferred?
- 720 J
- 36000 J
- 2400 J
- 400 J
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