2007-02-13 11:59:08 · 6 answers · asked by Marissa W 1 in Science & Mathematics ➔ Engineering
watt is a unit of power, volt is a unit of potential difference, power=current * voltage,
2007-02-13 12:02:02 · answer #1 · answered by glacius 1 · 0⤊ 0⤋
Voltage is a measure of force, electromotive force in particular. That is, how much "ompf" there is behind the electrons. The amp is a measure of how many electrons. Together, there product is the watt or a measure of power.
In a formula, watts = volts x amps
Specifically, a watt is the power produced by a current of one ampere across a potential difference of one volt , equal to 1/746 horsepower.
Think of the electricity in a circuit like water in a hose: what's important in whether that spray of water will knock you on your butt (that is, do work) is the power (watt). That power is composed of how much water is flowing (amps) and the pressure behind it (volts). There can be a lot of pressure behind a trickle and it won't be able to do much, or conversely, a lot of water at ;pw pressure will just dribble out of the hose. But combine high pressure with high volume--watch out!
Technically speaking, a volt is meter-kilogram-second unit of electrical potential difference and electromotive force equal to the difference of potential between two points in a conducting wire carrying a constant current of one ampere when the power dissipated between these two points is equal to one watt.
2007-02-13 12:15:09 · answer #2 · answered by Jon K 2 · 0⤊ 0⤋
Watts equals Volts times Amps.
W = V * A
so an appliance that uses 5 amps and 110 volts uses 550 watts of electricity.
550 watts = 5 amps * 110 volt
2007-02-13 12:03:36 · answer #3 · answered by Sky 4 · 0⤊ 0⤋
Volts are the power's rating or potential (capability). A Watt is the amount of energy @ that power (volts) that will or is being used for a certain task.
2007-02-13 12:06:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The volt is defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power. Hence, it is the base SI representation m2 · kg · s-3 · A-1, which can be equally represented as one joule of energy per coulomb of charge, J/C.
The watt (symbol: W) is the SI derived unit of power, equal to one joule per second.
2007-02-13 12:01:42 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Voltage is a measure of electrical potential. One would need to apply a load to the voltage source in order to get a current to flow. Wattage is a measure of power. Power is calculated by multiplying the current by the voltage.
2007-02-13 12:05:21 · answer #6 · answered by Anonymous · 0⤊ 0⤋