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what is voltage?

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Voltage is like water tank level and pipe is like resistance and flow of water is like current .
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Voltage is the potential to do work , is the ratio of energy available to the charge expressed in volts.
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Voltage is the force that applied to move electrons in the conductor.its unit is volt.
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Voltage is the force that pushes current to flow in a conductor. It's unit is Volt (v).
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Voltage is an electromotive force or potential difference expressed in volts
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