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The value of the voltage (potential difference) across a conductor when a current of one ampere dissipates one watt of power in the conductor. It is also equal to one joule of energy per coulomb of charge, J/C. Unit conversion: V = W/A = (J/s)/A = J/As = J/C where V=volt, W=watt(power), A=ampere, s=second, C=coulomb(charge)

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15y ago
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11y ago

Voltmeters measure in - wait for it - volts.Some may domillivolts as well. A select few might do Kilovolts, or even more.

But these days it's rare to find dedicated voltmeters, we tend to get so-called multimeters instead. They'll happily measure resistance, or current, maybe even capacitance if you ask them.

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11y ago

Volts are measured. If you have an ammeter you can also measure amperes.

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12y ago

The 'volt'.

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Q: What is the unit for voltage?
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