Question

Power tells one’s ________ of performing work.

• A. Speed
• B. Time
• C. Weight
• D. Capacity

Hint:

Power tells us how quickly work is being done, i.e., it is a measure of speed in performing a task, not just the amount of work done.

Answer 1

The Correct Option is A

Step 1: Understanding Power in Physics
In physics, power is defined as the rate at which work is done or energy is transferred. It tells us how fast a person or machine performs work. The formula for power is: \[ \text{Power} = \frac{\text{Work}}{\text{Time}} = \frac{\text{Force} \times \text{Distance}}{\text{Time}} \] Thus, power relates directly to how quickly work is performed, or how fast energy is used.
Step 2: Evaluating the options
- (A) Speed: This is the correct answer, as power is related to the speed or rate of performing work. - (B) Time: Time is a factor in the calculation of power, but it is not what power directly measures. - (C) Weight: Weight is a force, but it is not related to power. - (D) Capacity: Capacity refers to the ability to do work, but it is not directly measured by power.
Step 3: Final Answer
Thus, power tells one’s speed of performing work.