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Discover how the voltage is affected when the current flows through wires of varying lengths.
Member rating: No Rating | Words: | Submitted: Mon Nov 17 2003
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Ohms Law My aim is to discover how the voltage is affected when the current flows through wires of varying lengths. Scientific Introduction In 1826, a German physicist George Ohm stated 'the current in a conductor is proportional to the potential difference between its ends', providing physical conditions like temperature stay constant. The word 'proportional' means that when you double the potential difference the current is also doubled automatically. Resistance is anything in the circuit that slows the flow of electrons round the circuit. This means that if you increase the resistance then the less current will flow or more voltage will be needed to keep the same current flowing. To calculate resistance you can work it out by using the formula R=V/I. This means that resistance= voltage/ current. Resistance can be affected by temperature; if the temperature is constant then the current will be proportional to the potential difference. Using this formula for ohms...
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