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- 1. Multiple ChoiceIs the amount of energy being transferred over a period of time.PowerEnergySecondsJoules
- 2. Multiple ChoiceWhat is the unit of measurement for power?JoulesWattsVoltageCalories
- 3. Multiple Choice
How much energy does this appliance transfer per second?240 V50 Hz150 WN533 - 4. Multiple ChoiceA microwave has a power rating of 1550 W. How much energy does it transfer per second?1.550 Joules15.50 Joules155.0 Joules1550 Joules
- 5. Multiple ChoiceWhich type of appliances transfer the most energy per second?Those that transfer energy into heat.Those that transfer energy into light.Those that transfer energy into sound.Those that transfer energy into movement.
- 6. Multiple ChoiceWhich appliance transfers the most energy per second?ClockLampDesktop ComputerIron
- 7. Multiple ChoiceWhat are we paying electrical companies?The power of the appliance per hour of use.We electricity used per hour.The impact of electricity use on the environment.The efficiency of the appliance.
- 8. Multiple ChoiceWhat is the unit of energy that electrical companies use?kJkWkJ/hourkW/hour
- 9. Multiple ChoiceA kettle transfers 1000J of energy every 2 seconds. Calculate its power.2000 Watts1000 Watts500 Wattscannot be determined
- 10. Multiple ChoiceWhich of the following will help us cut on electricity bills?Using high power appliances longer.Using high power appliances less often.Using appliances that produce heat energy.Using less efficient appliances.
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