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8 Cards in this Set
- Front
- Back
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ENERGY
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CAN BE TRANSFERRED USEFULLY, STORED BUT NOT DESTROYED
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ENERGY TANSFERS
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WHEN ENERGY IS TRANSFERRED ONLY PART IS USEFUL THE REST IS WASTED
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WASTED ENERGY
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ENERGY THAT IS WASTE TRANSFERS TO HEAT
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TO CALCULATE EFFICIENCY
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EFFICIENCY = USEFUL ENERGY OUT/ USEFUL ENERGY IN (X100)
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TO CALCULATE EFFICIENCY (2)
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EFFICIENCY = USEFUL POWER OUT/ USEFUL POWER IN (X100)
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AMOUNT OF ENERGY
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DEPENDS ON HOW LONG APPLIANCE IS ON FOR
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ENERGY TRANSFER
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E= P X t
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E= P X t
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E is energy transferred in kWh
P is power in kWh t is time in hours |
