What are the 3 formulas for calculating power?

Power = force multiplied by speed (velocity) P = F × v….ALTERNATING CURRENT (AC) ~

Current (single phase): I = P / Vp×cos φ	Current (3 phases): I = P / √3 Vl×cos φ or I = P / 3 Vp×cos φ
Power (single phase): P = Vp×Ip×cos φ	Power (3 phases): P = √3 Vl×Il×cos φ or P = √3 Vp×Ip×cos φ

What are the 3 formulas in Ohm’s law?

3-4: A circle diagram to help in memorizing the Ohm’s Law formulas V = IR, I = V/R, and R= V/I. The V is always at the top.

What is the formula to be find the power of the current and voltage values are known?

P= In×R (where P= Power, R= Resistane , I= Current)

What is the formula of voltage current and resistance?

From this, we conclude that; Current equals Voltage divided by Resistance (I=V/R), Resistance equals Voltage divided by Current (R=V/I), and Voltage equals Current times Resistance (V=IR).

How do you calculate power voltage and resistance?

For example if the power is 100 watts and the voltage is 50 volts, the current is 100 / 50, or 2 amps. Calculate the resistance, in Ohms, by dividing the voltage by the current. Ohms law states that voltage = current x resistance, so by rearranging the formula resistance = voltage / current.

What is the formula for calculating current?

FAQs on Current Formula If the voltage (V) and resistance (R) of any circuit is given we can use the current formula to calculate the current, i.e., I = V/R (amps).

What is formula for calculating 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). Power may be measured in a unit called the horsepower. One horsepower is the amount of work a horse can do in 1 minute, which equals 745 watts of power.

Which formula is correct for calculation of power?

P = E/t: This formula is also called the mechanical power equation. Here E stands for energy in joule and t stands for time in seconds. This formula states that the consumption of energy per unit of time is called power.

What is resistance and its formula?

The resistance formula is as follows: Resistance = voltage drop across a resistor/ current flowing through a resistor. R = \frac{V}{I} R = resistance (Ohms, Ω)

What is the power formula for voltage and resistance?

Voltage applied across the two ends =V, Current flowing in the circuit = I and. Resistance = R. The Power Formula is made use of to compute the Power, Resistance, Voltage or current in any electrical circuit. It is articulated in watts.

How do you calculate power and voltage in a circuit?

Power, Voltage, Current & Resistance Formulas 1 (1) Electrical Power formulas in DC Circuits P = VxI P = I2R P = V2/R 2 (2) Electrical Potential or Voltage Formula in DC Circuits V = I x R V = P / I V = √ (P x R) 3 (3) Electrical Current Formulas in DC Circuit I=V/R I = P/V I = √P/R 4 (4) Electrical Resistance Formulas

What are the power equations associated with Ohm’s law?

However, these power equations are so commonly associated with the Ohm’s Law equations relating voltage, current, and resistance (E=IR ; I=E/R ; and R=E/I) that they are frequently credited to Ohm. REVIEW: Power measured in watts, symbolized by the letter “W”.

What is the power formula used for?

The Power Formula is used to compute the Power, Resistance, Voltage or current in an electrical circuit. The standard metric unit of power is the Watt. Problem 1: An electric machine makes use of 300 J of energy to do work in 10s. How much power does it use? Time taken t = 10 s.