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Paul Sheffield

on 22 May 2017

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Transcript of ELECTRICITY

Calculating Power
P= V I
P= Work done / t
P= I squared x R
Power and Efficiency
What is the power of the motor?
Power in?
Power out?
What is the power of the kettle?
Power in?
Power out?
What is power?
What is efficiency?
What is energy?
What is a volt?
What is an Amp?
What is a Watt?
Power and Energy transferred
Energy transferred = Power x time
Energy transferred= Charge x Voltage

Remember Sankey diagrams
link work done to force X distance moved
link power to energy transferred / time
this can be GPE= mgh
Full transcript