Ohm - Note-A-Rific: Ohm The amount of current flowing in a...

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Note-A-Rific: Ohm The amount of current flowing in a circuit depends, in part, on the voltage. It also depends on how the material of the conductor resistance the motion of its electrons. o Gold: an excellent conductor because its electrons are quite easily moved. o Aluminum: not a great conductor since its electrons don’t move well. We would say that gold has a low resistance, and aluminum has a high resistance. To understand the relationship between voltage, current, and resistance, look at the following analogy. Imagine a water pump that is being used to get some water out of the basement of a house. They try using a thin hose, and then a bigger hose. The big hose has a much lower resistance to the water flowing through it, so more water comes out the other end. This is how electricity works: 1. The Pump is like Voltage : think of voltage (a potential difference) as the pumping power that is shoving electrons through the wire. 2. The
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This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

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Ohm - Note-A-Rific: Ohm The amount of current flowing in a...

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