Q:

# What is the unit for voltage?

A:

The unit for potential energy per unit charge, or voltage, is the volt, which has the symbol "V." It takes its name from the Italian physicist Alessandro Volta, credited with inventing one of the first electric batteries.

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Voltage refers to the work that would be necessary for each unit charge against the existing electric field to move a charge from Point A to Point B. One volt is the equivalent of multiplying one ampere (a unit of current) by one ohm (a unit of resistance). To get the power in terms of watts, it is necessary to multiply the voltage by the current in amps.

## Related Questions

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Wiring a 220 volt electrical outlet for a dryer is a simple task if you have existing 220 volt supply wires in the wall coming from the breaker box. You need a 220 volt outlet with matching pin configuration to that of your dryer's plug, a screwdriver, a wire cutter or stripper and some wall screws. The entire project should take no more than 15 minutes.

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While both kVA and kW are units of measure, kVA is a kilo volt amperes and kW is a kilowatt. Both the kVA and the kW are units used to express power.

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