Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.
You would measure the amount of voltage between two points in a circuit with a(n):
reostat |
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ammeter |
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voltmeter |
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battery |