Question

The unit of power is:

• A. Watt per second
• B. Joule
• C. Kilo joule
• D. Watt

Answer 1

The correct option is D

Watt

The explanation for the correct option:

In the case of Option D

1. Power is work done per unit time.
2. The unit of power will be $\text{Joules}/\text{second}$ and is known as Watt.

The explanation for the incorrect options:

1. In the case of Option A, the unit of power is watt not watt per second.
2. In the case of Option B, Joule is the unit of energy, not power.
3. In the case of Option C, Joule is the unit of energy, not power.

Hence, Option D is correct.