The explanations here are that; Current equals Power divided by Voltage (I=P/V), Power equals Current times Voltage (P=VxI), and Voltage equals Power divided by Current (V=P/I).
How do you calculate power?
Power is equal to work divided by time.
In this example, P = 9000 J / 60 s = 150 W . You can also use our power calculator to find work – simply insert the values of power and time.
What are the 3 equations for 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 |
How do you get power from voltage?
Electrical power is the product of voltage and current. P=VXI.
How do you find the power of a current?
Use it in the same way as the Ohm’s Law triangle:
- To calculate power, P: put your finger over P, this leaves I V, so the equation is P = I × V.
- To calculate current, I: put your finger over I, this leaves P over V, so the equation is I = P/
How do you calculate power in watts?
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. For example, a 60-watt light bulb uses 60 joules per second.
How do you calculate energy and power?
Electrical energy is the product of power multiplied by the length of time it was consumed. So if we know how much power, in Watts is being consumed and the time, in seconds for which it is used, we can find the total energy used in watt-seconds. In other words, Energy = power x time and Power = voltage x current.
How is voltage calculated?
When spelled out, it means voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.
How do you calculate power without a calculator?
Write a multiplication sign between each of the base numbers that you have just written. An exponent is a number being multiplied by itself a certain number of times, and this is what you are representing when you write the multiplication signs between base numbers. Multiply out your new equation.
How do you calculate amps in a circuit?
To calculate amperage, use the equation Amps = Watts/Volts. For example, a 200W light bulb on a 120V circuit would draw about 1.67 amps.
How do you convert volts to amps and joules?
If voltage, (V) equals Joules per Coulombs (V = J/C) and Amperes (I) equals charge (coulombs) per second (A = Q/t), then we can define electrical power (P) as being the totality of these two quantities. This is because electrical power can also equal voltage times amperes, that is: P = V*I.
How do you type exponents?
Press the “Shift” and “6” keys to enter a caret symbol. Alternatively, type two asterisks in a row. Enter the exponent.
How do you solve 5 to the third power?
Answer: The value of 5 raised to power of 3 is 53 = 125. Explanation: 53 = 5 × 5 × 5 = 125.
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