(Redirected from Volt)

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The unit of measure for electrical potential.

Basically, a volt is the ammount of force needed to push 1 amp through 1 ohm of resistance. So if you have a circuit that has a resistance of 500 ohm, and needs 10ma (1/100 of an amp) to power up, you need 5v to power it.

There is a typical misunderstanding about volts. Usually people see a "high voltage sign" and think that the volts can cause harm. Actually, what it is, is that everything has resistance, including your body. So the high voltage could push a large amount of current (amps) through you, and the amps is what does the harm, It is just the voltage that enables it.

SI multiples

SI multiples for Volt (V)
Submultiples Multiples
Value Symbol Name Value Symbol Name
10−1 V dV deciVolt 101 V daV decaVolt
10−2 V cV centiVolt 102 V hV hectoVolt
10−3 V mV milliVolt 103 V kV kiloVolt
10−6 V µV microVolt 106 V MV megaVolt
10−9 V nV nanoVolt 109 V GV gigaVolt
10−12 V pV picoVolt 1012 V TV teraVolt
10−15 V fV femtoVolt 1015 V PV petaVolt
10−18 V aV attoVolt 1018 V EV exaVolt
10−21 V zV zeptoVolt 1021 V ZV zettaVolt
10−24 V yV yoctoVolt 1024 V YV yottaVolt
Common prefixed units are in bold face.


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