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The SI units for mechanical and electrical Power are the Watt (W), and the Watt (electrical) (We) respectively.
Power is the rate of doing work, or at which energy is converted. It can be thought of as - "amount of energy used to perform work, or converted from one form to another, in a specified period of time, namely, in a second".
The equation is P=W/t, where P is Power, W is the work done and t is the time taken. The equation, P=E/t, where E is the amount energy used to do the work, means the same thing. The unit for Energy is the Joule (J), and the unit for time is the second (s). The unit of power is then the watt,which is equal to 1 Joule (J) per second (s).
Electrical Power
There are a few different formulae depending on whether voltage, current or resistance are being considered. Electrical power is equal to the amount of current times the voltage, or P=IV. Electrical power is also equal to the current squared times the resistance, P=I2R
There are other formulae for the average electrical power of a sinusoidal voltage, but this is beyond the scope of this question.
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A unit of energy is the unit of what?
... is called power. The SI unit for energy is the joule; the SI unit for power is joule/second = watt.
What is the SL unit of power?
I don't know about SL. If you mean SI, the unit of power is the watt (equal to joules/second).
What is the SI unit for power which equals joules per second?
1 joule per second = 1 watt
The SI unit of energy is the calorie?
No, the calorie is an older unit. The SI unit is the Joule.
Power is measured with what unit of energy?
Power and energy are different physical quantities. They have their own units in SI system Unit of energy is joule and that of power is watt. Of course electrical energy is measured as kW h
How was the SI unit of power derived?
The SI unit of power is the watt, defined as joules/second. Joule is the unit for energy.
A unit of energy is the unit of what?
... is called power. The SI unit for energy is the joule; the SI unit for power is joule/second = watt.
What is the SI base unit for Power?
There is no SI base unit for power.Power is measured in watts, which is a derived unit, not a base unit.A watt is equal to one joule (newton-meter) per second (J/s).
The rate at which energy is transfered is called?
That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.
Who determined the power of a strong horse to move an object 1 meter for 1 second?
No one. A horse power is an Imperial measurement unit, not an SI unit and so a metre would not have featured!No one. A horse power is an Imperial measurement unit, not an SI unit and so a metre would not have featured!No one. A horse power is an Imperial measurement unit, not an SI unit and so a metre would not have featured!No one. A horse power is an Imperial measurement unit, not an SI unit and so a metre would not have featured!
What of these is a unit of power and which is a unit of electrical energy?
Please don't write "these", implying a list, which you don't provide.The SI unit of power is the watt = joules/second. The SI unit of energy is the joule.
What is the SI unit and symbol for power?
watt
Write the si unit power?
Watt.
What SI unit is used to express power?
the answer for the si unit of power is the watt or w
What unit is power measured in?
The SI unit for power is the watt, which is equal to joules/second.The SI unit for power is the watt, which is equal to joules/second.The SI unit for power is the watt, which is equal to joules/second.The SI unit for power is the watt, which is equal to joules/second.
What is the practical unit of power in engineering?
The SI unit for power is the Watt, the most commonly derived unit is for electrical power definition, which is the Kilowatt.
What is the SI unit of Thermal power?
The SI unit for power, thermal or mechanical, is the watt, W. 1 W = 1 J/s (joule/second).
