Kilowatt hour is the unit of

Options

A. power
B. energy
C. impulse
D. force

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the unit represented by "kilowatt hour" (kWh). It's important to identify what kWh measures in the context of physics.

2. **Breaking Down the Term**: The term "kilowatt hour" consists of two parts: "kilowatt" and "hour".
- A kilowatt (kW) is a unit of power, which measures the rate of energy transfer.
- An hour (h) is a unit of time.

3. **Combining the Units**: When we combine these two units (kilowatt and hour), we are essentially measuring the amount of energy consumed or produced over a period of time.

4. **Defining Energy**: Energy is defined as the capacity to do work. In electrical terms, energy can be calculated as power multiplied by time. Therefore, when we say kilowatt hour, we are measuring energy.

5. **Conclusion**: Based on the above analysis, we conclude that kilowatt hour is the unit of energy.

**Final Answer**: Kilowatt hour is the unit of energy.

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