Question

C(o). How are the various distribution circuits in domestic electrical wiring connected?

Answer 1

Concept used: Parallel combination of resistors

Step1: Parallel combination of resistors

When two or more resistors are connected between two common points so that the same potential difference is applied across each of them, then these resistors are said to be connected in parallel.

Step 2: Domestic electrical wiring

The various distribution circuits in domestic electrical wiring are connected in parallel. This is done due to the following reasons:

1. When each circuit is connected in parallel, then the potential difference of each circuit is equal to the potential difference in the supply line. Therefore, the potential difference of each circuit is the same and thus each electric electrical appliance work under constant voltage.
2. When each circuit is connected in parallel, then if two or more appliances are used at the same time, then each appliance will be able to draw as much current as needed. Thus, the appliances with low resistance will draw a higher current, and the appliances with high resistance will draw a smaller current.
3. When each distribution circuit is connected in parallel, then each circuit operates separately. Thus, when one circuit gets overloaded, then only the fuse in that circuit will be blown off and the other circuits will remain safe.