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Unformatted text preview: raising the temperature of the resistor, which is why the resistor heats up. A resistor will typically increase its resistance as the temperature rises. This is because the higher temperature means the molecules making up the resistor are vibrating more vigorously. The electrons path becomes more jagged (imagine trying to move through an overcrowded room - if the party is dull and everyone is just standing there, you can move through fairly easily. If the party is exciting and everyone is dancing, it becomes much harder to move through the room - you keep bouncing into everyone and getting deflected from your path to the exit!) e) The battery puts out the same voltage, and we are increasing the resistance, so the current goes down and the battery is putting out less power....
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This note was uploaded on 03/10/2012 for the course PHYSICS 8B taught by Professor Shapiro during the Spring '07 term at University of California, Berkeley.
- Spring '07