To calculate the apparent power (\(VA\)):
\[ VA = \frac{W}{PF} \]
Where:
Watts (W) and Volt-Amps (VA) are both units of measurement for electrical power. Watts measure real power, which is the actual power consumed by a device to perform work. Volt-Amps measure apparent power, which is the product of the voltage and current supplied to the circuit. The power factor is a unitless number between 0 and 1 that represents the ratio of the real power that is used to do work and the apparent power that is supplied to the circuit.
Let's assume the following values:
Using the formula:
\[ VA = \frac{500}{0.8} = 625 \text{ VA} \]
The apparent power is 625 VA.
Let's assume the following values:
Using the formula:
\[ VA = \frac{300}{0.9} = 333.33 \text{ VA} \]
The apparent power is 333.33 VA.