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That depends on the power factor.

The best the power factor can get is ' 1 ', if the load is all resistive with no reactance.

In that case, 100 VA = 100 watts.

If there's effective capacitance or inductance in the load or the cabling, then the V and the A

won't be exactly in phase, the power factor will be less than 1, and the 100VA will produce

less than 100 watts.

The 'power factor' is the cosine of the angle between 'V' and 'A' on the line. So

"wattage" is (100) x cosine(angle between V and A).

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14y ago
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Q: 100 VA what is the equivalant in wattage?
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