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Joules versus wattsThe joule and the watt are closely related units.

The joule is a unit of work and energy. It is equal to a newton-meter (N-m). Note that the unit of torque is also the newton-meter, but scientists don't use the word joule when they are talking about torque.

The watt is a unit of power and is defined as a joule per second, so you can see that power is work per unit time.

One joule is equal to one watt-second.

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Q: What are the differences between a joule and a watt?
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Related questions

What is a watt second?

A joule


Is one kilo-joule the same as one watt second?

No. 1 watt = 1 joule per second 1 watt-second = 1 joule 1 kilo-joule = 1,000 joules


How much is one Watt of energy?

A watt is a unit of power, not of energy. The international unit for energy is the joule. One watt is an energy transfer of one joule per second.A watt is a unit of power, not of energy. The international unit for energy is the joule. One watt is an energy transfer of one joule per second.A watt is a unit of power, not of energy. The international unit for energy is the joule. One watt is an energy transfer of one joule per second.A watt is a unit of power, not of energy. The international unit for energy is the joule. One watt is an energy transfer of one joule per second.


What is the relation between Newton meter and watt?

1 Watt = 1 Joule / Second = 1 Newton-meter / Second.


Is a watt a unit of power or a unit of electrical energy?

Watt is a unit of power. 1 Watt = 1 Joule/second; joule is the unit for energy.


How many watts equals 1 joule?

Watts are units of power. Joules are units of energy. They are not the same. One watt is one joule per second.


What unit of electrical power is equal to one joule per second?

One joule per second equates to:One watt or,0.00134 electric horsepower or,3.412 BTUs per hour.


What starting with w is a unit of electrical power?

The watt, which is equal to 1 joule/second.


How does watt and joule relate?

The Joule is a unit of energy, while the Watt is a unit of power. Joule is the alternate name for a Newton-meter of energy, and Watt is the alternate name for a Newton-meter per second of power. This means that one Watt is one Joule per second; a 100-Watt light bulb converts 100 Joules of electrical energy every second into heat energy and light energy.


What is 1 watt of power?

One Watt is one Joule of energy transfered every second. So the Watt is the unit of enegery transfer.


What is the difference between joules and watts?

A watt is a rate (speed) of using energy ... 1 joule per second.


Is the Si unit power of joule?

The joule is the SI unit for energy.The unit of power is the watt (W), which is equal to one joule per second.Both the joule and the watt are derived units. (They are both surnames so their symbols are always capitalised: J and W.)For the pure physics geeks:a joule is m2 kg s-2 anda watt is m2 kg s-3