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Watts (W) is calculated by multiplying Volts (V) times Amps (A), so 1W = 1VA
Answer
In a.c. circuits, the watt is used to measure the true power of a load, and is determined by multiplying the supply voltage by the load current by the power-factor of the load. The volt ampere is used to measure the apparent power of a load, and is determined by multiplying the supply voltage by the load current.
So the relationship between the watt and the volt ampere depends on the power factor of the load. For example a 100 VA load with a power factor of 0.8 (leading or lagging) will have a true power of 80 W.
Wiki User
∙ 8y ago
Wiki User
∙ 12y agoIn a purely resistive circuit, 250 VA = 250 Watts.
In most applications this is true, or CONSIDERED true for all practical purposes. For circuits having motors, Transformers, or capacitors this may not be true. It is impossible for me to know what you have without more information.
Wiki User
∙ 12y ago50
Wiki User
∙ 12y ago150
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In a.c. circuits, the watt is used to measure the true power of a load, and is determined by multiplying the supply voltage by the load current by the power-factor of the load. The volt ampere is used to measure the apparent power of a load, and is determined by multiplying the supply voltage by the load current. So the relationship between the watt and the volt ampere depends on the power factor of the load. For example a 100 VA load with a power factor of 0.8 (leading or lagging) will have a true power of 80 W.
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