how the current in a wire changes as the voltage across the wire increase
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An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. ... When resistance is increased in a circuit , for example by adding more electrical components , the current decreases as a result.
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As long as the conductor's temperature is constant, the potential difference (or voltage) across its ends determines how much current flows through it.
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