GCSE Physics Fichas sobre Electrical Energy, creado por nadine pownall el 18/05/2016.
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Creado por nadine pownall
hace más de 8 años
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Cerrar
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Creado por nadine pownall
hace más de 8 años
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What useful energy transfer takes place in an electric drill ?
Which electrical appliance is usefully transfers electrical energy into light energy and sound energy ?
How many watts are equivalent to 12 kilowatts ?
An electric motor transfers 48 kj of electrical energy into kinetic energy in 2 minutes. What is the useful power output of the motor ?
How much electrical energy, in kWh, is transferred when a 9 kW shower is used for 15 minutes ?
The price of 1 kWh of electrical energy is 9p. How much does it cost to use a 60 W electric light for 4 hours ?
what might environmental costs include ?
loft insulation costs £600 including installation. It saves £80 a year on the fuel bill. How long is the payback time ?
