Engineering Science 1021A/B Lecture Notes - Lecture 34: Electrical Network

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Electrical Potential is a significant source of energy
Using electrical energy for our purposes requires some measure of control
At a minimum:
Conductors
Isolators
We've developed significantly beyond turning it "on" and "off"
Power Loss in Conductors
The power used in an electrical circuit is given by:
In the case of power transmission, this energy is lost as heat.
Ordinarily, but not always, we want to minimize the power loss
consider:
§
an extension cord
§
toaster elements
Controlling Electricity
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