Which of the following is NOT a unit of electrical measurement?

The choice of Newtons as the correct answer highlights an important distinction in units of measurement within the field of electricity versus those used in other physical contexts. Amperes, Watts, and Ohms are all directly related to electricity:

• Amperes measure electric current, indicating the flow of electric charge.
• Watts measure electrical power, which is the rate at which electrical energy is consumed or generated.
• Ohms measure electrical resistance, quantifying how much a material opposes the flow of electric current.

Newtons, on the other hand, are a unit of force in the International System of Units (SI). They are used to measure the force resulting from mass and acceleration, according to Newton's second law of motion (force equals mass times acceleration). As such, Newtons do not relate directly to electrical measurements, making them the outlier in the provided choices. Understanding this distinction is essential for grasping basic electrical concepts and measurements in the context of solar energy and other electrical applications.