# Power formula

1996-2018 The Physics Classroom, All rights reserved. Use the rules of logarithms to rewrite this expression in terms of logx power formula logy. Interactive simulation the most controversial math riddle ever! Please forward this error screen to sharedip-10718034197.

Enter any two known values and press «calculate» to solve for the two others. The used Browser unfortunately supports no Javascript. The program is indicated, but the actual function is missing. E means also energy, so we choose V. Some like better to stick to E instead to V, so do it. Undistorted powerful sound is not found in these formulas. That does not do either the intensity, nor the power or the energy.

There is really no RMS power. The words «RMS power» are not correct. RMS voltage and a RMS current. Why there is no such thing as ‘RMS watts’ or ‘watts RMS’ and never has been. RMS» power is a rather silly term which has gathered currency among audio people. Power is the amount of energy that is converted to a unit of time. André-Marie Ampère was a French physicist and mathematician.

The SI unit of measurement of electric current, the ampere, was named after him. Alessandro Giuseppe Antonio Anastasio Volta was an Italian physicist. The SI unit of measurement of electric voltage, the volt, was named after him. Georg Simon Ohm was a German physicist and mathematician. The SI unit of measurement of electric resistance, the ohm, was named after him.

James Watt was a Scottish inventor and mechanical engineer. In audio we use only high Impedance bridging or Voltage bridging. Power is like all energy sizes primarily a calculated value. Voltage and current can be amplified. We call the product of current gain and voltage gain «power amplification».

Please enter two values, the third value will be calculated. A magic triangle can be used to calculate all formulas easily. The other two values show then how to do the calculation. The apparent power S is calculated according to Pythagoras, the active power P and reactive power Q. The flow of electric charge Q is referred to as an electric current I. A current flows at a constant value I. International System of Units is set.

The formula used to compute airwattage differs between vacuum cleaner manufacturers. S is the suction capacity expressed as a pressure in units of inches of water. This makes one airwatt equal to 0. 9983 watts, which rounds off to 1. Where D is the diameter of the orifice holes.