# What is Watts in SI units?

**watt**(symbol: W) is a

**unit**of power. In the International System of

**Units**(

**SI**) it is defined as a derived

**unit**of 1 joule per second, and is used to quantify the rate of energy transfer.

Just so, what is the unit for Watts?

**Watt** is the **unit** of power (**symbol**: W). The **watt unit** is named after James **Watt**, the inventor of the steam engine. One **watt** is defined as the energy consumption rate of one joule per second. 1W = 1J / 1s. One **watt** is also defined as the current flow of one ampere with voltage of one volt.

Furthermore, is kW an SI unit? Watts (W) and **Kilowatts** (**kW**): Watts are the **SI unit** of power. **Kilowatts** are equivalent to 1,000 Watts and are the most frequently used **unit** of electrical power. Power in general is defined as energy over time. Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 **kW** = 1000 J/s.

Thereof, what is a joule in SI units?

**Joule**, **unit** of work or energy in the International System of **Units** (**SI**); it is equal to the work done by a force of one newton acting through one metre. Named in honour of the English physicist James Prescott **Joule**, it equals 10^{7} ergs, or approximately 0.7377 foot-pounds.

What is Watt's law?

**Watt's Law** states that: Power (in **Watts**) = Voltage (in Volts) x Current (in Amps) P = V I Combining with Ohm's **law** we get two other useful forms: P = V*V / R and P = I*I*R Power is a measurement of the amount of work that can be done with the circuit, such as turning a motor or lighiting a light bulb.