Question

quiz
what is primary power?
the high voltage, low amperage power supplied by the power utility or generator.
the low - voltage, high - amperage power supplied by the power utility or generator.
the low - amperage, high - voltage welding current.
the high - amperage, low - voltage welding current.
question
1 of 4

Explanation:

Primary power is the high - voltage, low - amperage power supplied by the power utility or generator. In electrical systems, power \(P = VI\) (where \(V\) is voltage and \(I\) is current). Power utilities or generators typically supply power at high voltage (to reduce power loss during transmission, as power loss \(P_{loss}=I^{2}R\) and \(I=\frac{P}{V}\), so higher \(V\) for the same \(P\) gives lower \(I\) and lower \(P_{loss}\)) and relatively low amperage.

Answer:

The high voltage, low amperage power supplied by the power utility or generator.