A switch is always connected to the

Options

A. earth wire
B. neutral wire
C. live wire
D. none of these

Answer

### Step-by-Step Solution:

1. **Understanding the Components**: In an electrical circuit, there are typically three types of wires: live wire, neutral wire, and ground wire. The live wire carries the current to the device, the neutral wire completes the circuit, and the ground wire is a safety feature.

2. **Role of the Switch**: A switch is a device that can open or close a circuit. When the switch is closed, it allows current to flow through the circuit; when it is open, it stops the flow of current.

3. **Connection of the Switch**: The switch is always connected to the live wire. This is because the live wire is the one that carries the current to the device. If the switch is placed on the live wire, opening the switch will break the circuit and stop the current flow to the device.

4. **Safety Considerations**: If a switch were connected to the neutral wire instead, the circuit would still be complete, and the device would remain energized even when the switch is off. This could pose a risk of electric shock if someone were to touch the device.

5. **Conclusion**: Therefore, the correct answer is that the switch is always connected to the live wire to ensure safety and proper functioning of the electrical device.