Uploaded by FARIDA NAZIR MOHAMMED NAZIR TAHIR HASSAN

Power and Energy

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Power & Energy
Who is the most powerful?
Which device uses the most power?
To calculate the power
Power = Voltage x Current
P=VxI
Who uses the most energy?
To calculate the energy transferred.
Energy transferred = Power x Time
What is the cost of this energy?
Units used = Power x time
Total cost = Number of units x Cost of per unit
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