Kilowathour is the unit of

Options

A. Energy
B. Power
C. Charge
D. Time

Answer

To solve the question "Kilowatt hour is the unit of", we will analyze the components of the term "Kilowatt hour" and determine what it represents.

### Step-by-Step Solution:

1. **Understanding the Components**:
- The term "Kilowatt" (kW) is a unit of power.
- 1 Kilowatt is equal to 1000 Watts (1 kW = 10^3 W).
- The term "hour" (h) is a unit of time.

2. **Combining Power and Time**:
- Kilowatt hour (kWh) combines power and time.
- It represents the amount of energy consumed or produced when a power of 1 kilowatt is used for 1 hour.

3. **Energy Calculation**:
- Energy can be calculated using the formula:
\[ \text{Energy} = \text{Power} \times \text{Time} \]
- In this case, if we have 1 kW of power used for 1 hour, the energy consumed is:
\[ \text{Energy} = 1 \text{ kW} \times 1 \text{ hour} = 1 \text{ kWh} \]

4. **Conclusion**:
- Since Kilowatt hour is derived from multiplying power (in kilowatts) by time (in hours), it is a unit of energy.
- Therefore, the answer to the question is that Kilowatt hour is the unit of **energy**.

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

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