Neat Power Unit In Physics

The unit Watt is dedicated in honour of So James Watt the developer of the steam engine.

Power unit in physics. For example cars often have one or more auxiliary power outlets with which you can charge a cell phone or other electronic devices. This unit is named after Scottish scientist James Watt who is credited with the invention of the steam engine. As power doesnt have any direction it is a scalar quantity.

Thus a Watt is equivalent to a Joulesecond. Power is a scalar quantity it has no direction. The new rules forced constructors to build new internal combustion engines less powerfull more efficient and enviromentally friendly than the previous ones.

Other units for power include horsepower hp metric horsepower ergs per second ergs or cheval vapeur CV and foot-pounds per minute. Probably the most familiar unit of mechanical power is the horsepower hp conceived by James Watt in 1782 to position his steam engine against. For historical reasons the horsepower is occasionally used to describe the power delivered by a machine.

The standard metric unit of power is the Watt. Sometimes the power of motor vehicles and other machines is given in terms of Horsepower hp which is approximately equal to 7457 watts. Physics in Motion Unit 5.

The International System uses joules J and seconds s for these respectively. Thus 1 A V 1 W. It is the power consumed by a device that carries 1 A of current when operated at a potential difference of 1 V.

Thus the SI unit of power is J s 1. Multiple electric power equations are derived exploring the relationship between electric power and Ohms law. The SI unit of power is the watt W or joule per second Js.