Question

Which of the following is the smallest commercial unit of energy?

• A. Watt Hour
• B. Watt Seconds
• C. Watt Minutes
• D. Kilowatt Hour

Answer 1

The correct option is A

Watt Hour

Explanation for the correct option:

Energy:

1. Energy is considered a quantitative property that can be transferred from an object in order for it to perform work.
2. Hence, it can be defined as the strength to do any kind of physical activity or it is defined as the ability to do work.
3. The energy can be transferred from one form to another, the movement of energy from one location to another is known as energy transfer.

Smallest commercial unit of energy:

1. The smallest commercial unit of energy is $\mathrm{watt}-\mathrm{hour}$.
2. $\mathrm{Watt}-\mathrm{hour}$ is the amount of energy consumed in an hour at a rate of one $\mathrm{watt}$.

Thus, the correct answer is option (A).