Correct Option
The correct option is Both A and R are true and R is the correct explanation of A
Explanation
Domestic electrical circuits are designed to ensure that all appliances operate efficiently at their rated voltage and function independently of one another. The choice between series and parallel connections dictates how voltage and current are distributed among devices.
Statement-wise Analysis
- Assertion (A): Correct. In household wiring, appliances such as bulbs, fans, and refrigerators are connected in parallel to the mains supply. This is the standard practice for domestic circuits.
- Reason (R): Correct. In a parallel circuit arrangement, the potential difference (voltage) across each branch is identical to the source voltage. Consequently, every appliance connected in parallel receives the full mains voltage (e.g., 220V in India).
Justification for the Link: Electrical appliances are manufactured to operate at a specific voltage rating. If they were connected in series, the total supply voltage would be divided across the components, causing them to operate inefficiently or not at all. Therefore, the necessity for each appliance to receive the same, full rated voltage is the primary reason they are connected in parallel. Thus, R is the correct explanation for A.
Key Takeaway
Parallel connection is used in household circuits because it maintains constant voltage across all appliances and ensures that the operation or failure of one device does not affect the others.