Unit of electric power may also be expressed as :

Options

A. volt ampere
B. kilowatt hour
C. watt second
D. joule second

Explanation

To determine the alternative expression for the unit of electric power, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Power in Electrical Circuits**:
- Electric power (P) in a circuit can be calculated using the formula:
\[ P = V \times I \]
where \(V\) is the voltage (in volts) and \(I\) is the current (in amperes).

2. **Identifying Units**:
- The unit of voltage (V) is volts (V).
- The unit of current (I) is amperes (A).

3. **Calculating the Unit of Power**:
- From the formula \(P = V \times I\), we can express the unit of power as:
\[ \text{Unit of Power} = \text{Unit of Voltage} \times \text{Unit of Current} = \text{Volts} \times \text{Amperes} \]
- Therefore, the unit of electric power can also be expressed as:
\[ \text{Power} = \text{Volt} \times \text{Ampere} = \text{Volt Ampere} (VA) \]

4. **Evaluating the Options**:
- Now, let's evaluate the provided options:
- **Option 1**: Volt Ampere (VA) - This is correct as derived above.
- **Option 2**: Kilowatt Hour (kWh) - This is a unit of energy, not power.
- **Option 3**: Watt Second (Ws) - This is also a unit of energy, not power.
- **Option 4**: Joule Second (Js) - This is again a unit of energy, not power.

5. **Conclusion**:
- The correct alternative expression for the unit of electric power is **Volt Ampere (VA)**.

### Final Answer:
The unit of electric power may also be expressed as **Volt Ampere (VA)**.