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How does changing the length affect the resistance of a wire?
Member rating: No Rating | Words: | Submitted: Mon Jun 28 2004
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How does changing the length affect the resistance of a wire? Energy is transferred in a circuit by a flow of charge; this is an electric current. Electric current is measured in amperes (usually shortened to amps or A) using an ammeter. An ammeter is connected in series in the circuit e.g. The current us always the same in all parts of a series circuit. The battery (or power supply) provides energy. The higher its voltage the more energy it supplies. The voltage across a component is a measure of the work done, or energy transferred to other forms, when taking the current through a component. Voltage is measured in volts (V) using a voltmeter. Voltmeters are always connected in parallel across a component. A voltmeter in a circuit may look like this: In series circuits the supply voltage is shared between the components in the circuit. Resistance is the opposition of a circuit component...
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