Kaplan Nursing Entrance Practice Exam

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What is measured in watts?

Resistance
Current
Power
Voltage

The correct answer is: Power

Power is measured in watts, which is a unit that quantifies the rate at which energy is used or produced. In an electrical context, power is the product of voltage (the electric potential) and current (the flow of electric charge). This relationship is fundamental in understanding how electrical devices operate and how energy is consumed within a circuit. Watts express how much work can be done in a specific amount of time, which is crucial in both electrical engineering and various applications involving electricity, such as calculating energy costs, determining load capacities for circuits, and ensuring that devices receive the proper power supply for optimal functionality. Understanding power in terms of watts allows for effective planning and management of electrical systems.