VA to voltage calculator
Easily convert apparent power (VA) to voltage using current (A) or load resistance. Perfect for electrical design, testing, and equipment rating checks.
apparent power to voltage
To calculate the voltage we use the apparent power divided by the current or square root the power multiplied by resistance in order to get the voltage in VA. This calculator makes calculations in real time.
Formula & Table Summary:
Known current: \( V = \frac{S}{I} \)
Known resistance: \( V = \sqrt{S \times R} \)
watts to volts tool
The VA to Voltage Calculator is a fast converter of apparent power- volt-amps (VA)- to voltage ( V ) when either current or load resistance is known. Apparent power combines both real power (watts) and reactive power (VAR) and it is essential in the AC systems. This calculator employs the simple electrical relations to calculate voltage based on VA. In the resistive loads, power, voltage and current are related bearing in mind the expression of Ohm. It can be used to vet electrical ratings, size transformers, or test the outputs of power supplies by engineers, electricians and students. Input the VA value and either current (A) or resistance ( ) and you can obtain correct voltage instantly.
electrical VA calculator
| VA (S) | Current (A) | Resistance (Ω) | Voltage (V) |
|---|---|---|---|
| 100 | 2 | — | 50 |
| 500 | 5 | — | 100 |
| 100 | — | 25 | 50 |
| 400 | — | 100 | 200 |
Frequently Asked Questions - VA to voltage calculator:
What is VA?
VA stands for volt-amps, a measure of apparent power.
How do you convert VA to volts?
Divide VA by current or use the square root of VA times resistance.
Is VA the same as watts?
No, VA measures apparent power, watts measure real power.
Why use VA instead of watts?
VA accounts for both real and reactive power in AC systems.
Does power factor matter?
Yes, to get watts from VA you multiply by the power factor.
Can this work for DC circuits?
Yes, but VA equals watts in DC systems.
What units are used?
VA for apparent power, volts for voltage, amps for current, ohms for resistance.
Can I calculate without current?
Yes, if you know the load resistance.
Is VA rating important?
Yes, it determines transformer and UPS sizing.
What happens if VA is too high?
Overload may occur, causing overheating or damage.
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