The load power can be calculated by multiplying by the product of voltage and current. The formula is as follows:

Load power = voltage × current

For example, if the voltage of a circuit is 120V and the current is 5A, the load power is:

Load power = 120V × 5A = 600W

    It should be noted that this formula is only applicable to DC circuits. For AC circuits, since both the voltage and current of AC current vary, complex calculation methods are required to determine the load power.

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