Figure shows two ways of connecting the three bulbs A, B and C to a battery. Name the two arrangements. Which of them do you prefer to use in a household circuit? Give a reason to support your answer.

Figure (a) is series arrangement and Figure (b) is parallel arrangement.

Parallel arrangement is generally preferred to use in a household circuit because of the following reasons :

1. Each appliance works independently. If one appliance in the circuit stops working, it doesn't affect the working of other appliances.
2. Each appliance has an independent path for current and works at the same voltage.
3. Each appliance can have a separate switch connected to its live wire.