Oklahoma Locksmith Practice Exam

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What unit is commonly used to measure electrical power?

Volts
Amperes
Watts
Ohms

The correct answer is: Watts

The unit commonly used to measure electrical power is Watts. This unit quantifies the rate at which electrical energy is consumed or produced in a circuit. When talking about electrical power, Watts define how much work can be done in a given time by an electrical device, such as a light bulb or an appliance. In the context of electricity, power can be calculated using the formula: Power (in Watts) = Voltage (in Volts) x Current (in Amperes). Therefore, while Volts measure electrical potential and Amperes measure the flow of electric current, it is Watts that specifically indicate the total power usage or generation in any electrical system. Ohms, on the other hand, measure electrical resistance and are not related to the measurement of power itself.