Thursday, March 3, 2011
Lab - Introduction to DC Circuits
In this lab we investigated DC circuits and the added resistance that exists in wires. The idea was to set up a simple circuit with a power supply and load, and then use a variable resistor box to simulate the effects of long cables in a circuit. We found that additional cabling(variable resistor box) draws additional power that would increase the rate of discharge of a battery(power supply). Thus, since resistance R is proportional to the length of wire, a longer wire will consume more power due to the relationship P=I^2R=V^2/R.
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Dang, that sounds a lot better than mine. Haha.
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