A technician needs to connect a new appliance in a domestic circuit to ensure it receives full voltage and can be operated independently. What should the technician do?

Correct Answer: Connect the appliance in parallel with existing appliances

Step-by-Step Explanation:

To understand why domestic appliances are connected in a specific circuit arrangement, let us analyze the key requirements given in the question:

1. Full Voltage Supply: In a parallel circuit, every branch is connected across the main voltage source. Therefore, each appliance receives the full mains voltage (typically 220V–240V). In contrast, in a series circuit, the total voltage is divided among all components according to their resistances ($V_{\text{total}}=V_1+V_2+\dots$), meaning each appliance would receive significantly less than its rated operating voltage.

2. Independent Operation: In a parallel circuit, each appliance operates in its own separate electrical path with its own independent switch. Turning off or disconnecting one appliance does not interrupt the current flowing through other appliances. Conversely, in a series circuit, all appliances share a single continuous loop; if one appliance is switched off or breaks down, the entire circuit is broken, causing all other appliances to stop working.

3. Current Distribution: Connecting appliances in parallel reduces the overall equivalent resistance of the domestic circuit, allowing each appliance to draw the required current according to its power rating.

Hence, to ensure that the new appliance receives full voltage and can operate independently without affecting other devices, the technician must connect it in parallel with existing appliances.