How can potential difference be calculated?


Quick Answer

To calculate potential difference in volt, work done should be divided by charge. Work done and charge should be in joules and coulombs respectively.

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Full Answer

A potential difference, or voltage, is required for current flow across electrical components. For 1 joule of work that is done per joulomb charge, the voltage is equivalent to 1 JC^-1 or 1 V. Examples of items that can give potential difference are batteries and cells. A flashlight battery normally has 1.5 volts, while an automobile battery usually has 12 volts. To measure the voltage of an electrical component in a circuit, a voltmeter should be fixed parallel to it. Oscilloscopes and potentiometers are also used to measure potential difference.

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