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| | Ohm's law - Hutchinson encyclopedia article about Ohm's law (Site not responding. Last check: 2007-10-31) |
 | | He found that if the voltage across a conducting material is changed, the current flow through the material is changed proportionally (for example, if the voltage is doubled then the current also doubles). |
 | | If a current of I amperes flows between two points in a conductor across which the potential difference is V volts, then V/I is a constant called the resistance R ohms between those two points. |
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