Quick Answer: What SI Unit Is Joule?

What is current formula?

The relationship between current and resistance in an electric circuit.

Current is usually denoted by the symbol I.

Ohm’s law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR.

An alternative statement of Ohm’s law is I = V/R..

How do you find minimum power?

If you are trying to calculate the minimum load and you happen to only know the power and voltage ratings of your power supply, you can use the formula P = V2/R, which can become R = V2/P.

What is the SI unit of energy?

The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 – 1889). Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics.

What is the SI unit of work?

The SI unit of work is the joule (J), named after the 19th-century English physicist James Prescott Joule, which is defined as the work required to exert a force of one newton through a displacement of one metre.

How do I calculate power?

Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s).

Is Joule A unit of power?

1 Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter. 1 Watt is the power from a current of 1 Ampere flowing through 1 Volt. 1 kilowatt is a thousand Watts. 1 kilowatt-hour is the energy of one kilowatt power flowing for one hour.

Are joules equal to Watts?

Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s. A Watt is the amount of energy (in Joules) that an electrical device (such as a light) is burning per second that it’s running. So a 60W bulb is burning 60 Joules of energy every second you have it turned on.

How do you write joules per second?

Joule/second [ J/s ] Joule per second is a unit of power measurement system and its symbol is J/s.

What is Watts in SI units?

The 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.

What is the unit of Joule per second?

In physics, work per time describes a system’s power; defined by the unit watt (W), which is joule per second (J/s).

What is wattage formula?

The formula for calculating wattage is: W (joules per second) = V (joules per coulomb) x A (coulombs per second) where W is watts, V is volts, and A is amperes of current. In practical terms, wattage is the power produced or used per second.