What is the Power Formula used to determine proper load in electrical circuits?

• A. Amps = Watts / Volts.
• B. Watts = Volts x Amps.
• C. Volts = Watts / Amps.
• D. Power is calculated as Volts plus Amps.

Answer: (B)

Power in electrical circuits is the product of voltage and current. This means the amount of power, measured in watts, is found by multiplying the voltage (in volts) by the current (in amps). That direct relationship is why the standard form is Watts = Volts × Amps. It lets you size and assess loads: knowing the supply voltage and the current a device draws gives you its power consumption in watts, which you can compare to circuit ratings to ensure safe operation. The other forms are just rearrangements for solving different unknowns (for example, current can be found as I = P/V), but they don’t define power as cleanly as the direct P = VI form. The idea that power is Volts plus Amps is incorrect because adding those quantities doesn’t yield power.