Voltage measures the force or pressure of the electricity. Energy = mgh Where m is the mass, g is the acceleration due to gravity (9.8m/s^2) and h is the height.

H = Total developed head in meters = Density in kg/m 3. g = Gravitational constant = 9.81 m/sec 2. η = Efficiency of the pump ( between 0% to 100%) Formula – 2.

In physics, you can calculate power based on force and speed. P in kW = Here. The formula for work is:[1] X Research source Work=Force∗Distance{\displaystyle {\text{Work}}={\text{Force}}*{\text{Distance}}} To understand this concept, think about a 100 pound cement block. Determine the watts in a power source. Solved Examples. Answer: Known: Work done = W = 300 J, Time taken t = 10 s. The ampere (or amps) is the amount of electricity used. How much power does it use? Q = Flow rate in m 3 /sec.

This example shows one way to calculate BMI (Body Mass Index) in Excel. POWER formula examples.

It is important to be able to calculate power and efficiency. By definition, the nth root of a number can be calculated by raising that number to the power of 1/n. Calculate work.

The standard metric unit of power is the Watt. Since power is the rate of doing work (rate of energy consumption), then P = energy/unit time = mgh/t Where t is the time.

However, the object’s speed, v, … Exponents are entered using the exponentiation operator (^), with a number on the left and power on the right. Problem 1: An electric machine makes use of 300 J of energy to do work in 10s.

Back to basic, below are the simple Electric Power formulas for Single Phase AC Circuit, Three Phase AC Circuits and DC Circuits. P in Watt = Here.

In mechanical physics, work is the amount of force needed to move something over a selected distance. The Power Formula is used to compute the Power, Resistance, Voltage or current in any electrical circuit.

In other words, watt=amp X volt.

You will need to know the amps and the volts in the power source. Pump input power calculation formula or pump shaft power calculation formula. Electric Power Formulas & Equations in DC and AC 1-Φ & 3-Φ Circuits. To determine the wattage, use a simple multiplication formula. nth root of number. In the above circuit, we know we have a battery voltage of 18 volts and a lamp resistance of 3 Ω. Because work equals force times distance, you can write the equation for power the following way, assuming that the force acts along the direction of travel: where s is the distance traveled.

You can easily find electric power in watts by using the following electric power formulas in electric circuits. Pump Input Power = P. Formula – 1. The number of watts is equal to amps multiplied by volts. We’ve seen the formula for determining the power in an electric circuit: by multiplying the voltage in “volts” by the current in “amps” we arrive at an answer in “watts.” Let’s apply this to a circuit example: How to Use Ohm’s Law to Determine Current.

That's it!

The rate at which energy is transferred is called power and the amount of energy that is usefully transferred is called efficiency.

Learn the Power Formula.

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