hw physics - When electricity arrives in our home and we...

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When electricity arrives in our home and we use it to light a bulb, we usually don't think about all the steps required to get it there. Explain how electricity is produced and provided to homes. You may want to include such concepts as generators, transformers, resistive losses, AC vs. DC, fuses, current and voltage. Every day, people switch light switches on and off in our homes. We know it is electricity that turns the light bulb on but how does electricity get to each house? Electricity is the movement of electrons. From the power plant, electricity is traveling down a metal wire to the respective homes. Electricity travels very well through metal but does not leave the surface of metal easily. When the electrons are flowing through the wire (current) friction occurs. This is called resistance. While the electricity is flowing, it heats the wire up. The heat begins to make the filament glow. Electricity is first turned into heat which produces light. Resistance is also energy lost. The electricity is warming the wire it is traveling on and
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This note was uploaded on 06/28/2008 for the course PHYSICS 10 taught by Professor Miller during the Spring '08 term at University of California, Berkeley.

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