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watt

The watt (pronounced wot; symbol: W) is a derived unit of power in the International System of Units (SI), named after the Scottish engineer James Watt (1736 - 1819). The unit, defined as one joule per second, measures the rate of energy conversion. (wikipedia)

In terms of classical mechanics, one watt is the rate at which work is done when an object's velocity is held constant at one meter per second against constant opposing force of one newton.

In terms of electromagnetism, one watt is the rate at which work is done when one ampere (A) of current flows through an electrical potential difference of one volt (V).

SI multiples for watt (W)
Value
Symbol
Name
Multiples
1024 W
YW
yottawatt 1,000,000,000,000,000,000,000,000
1021 W
ZW
zettawatt 1,000,000,000,000,000,000,000
1018 W
EW
exawatt 1,000,000,000,000,000,000
1015 W
PW
petawatt 1,000,000,000,000,000
1012 W
TW
terawatt 1,000,000,000,000
109 W
GW
gigawatt 1,000,000,000
106 W
MW
megawatt 1,000,000
103 W
kW
kilowatt 1,000
102 W
hW
hectowatt 100
101 W
daW
decawatt 10
100 W
W
watt 1
10-1 W
dW
deciwatt 1/10
10-2 W
cW
centiwatt 1/100
10-3 W
mW
milliwatt 1/1,000
10-6 W
µW
microwatt 1/1,000,000
10-9 W
nW
nanowatt 1/1,000,000,000
10-12 W
pW
picowatt 1/1,000,000,000,000
10-15 W
fW
femtowatt 1/1,000,000,000,000,000
10-18 W
aW
attowatt 1/1,000,000,000,000,000,000
10-21 W
zW
zeptowatt 1/1,000,000,000,000,000,000,000
10-24 W
yW
yoctowatt 1/1,000,000,000,000,000,000,000,000
Attraction
Ohm's Law

See Also


Electromotive Force Ohms Law Power Resistance Volt

Created by Dale Pond. Last Modification: Friday September 11, 2015 03:16:55 MDT by Dale Pond.