In Homes, electrical appliances and lamps are connected in parallel because

Analyze the question: It asks why household appliances and lamps are wired in parallel rather than in series.

Explain the concept: In a parallel circuit, each appliance is connected directly across the same supply voltage (e.g., 220-240 V in Nigeria). Each appliance forms its own separate branch. This gives two main advantages:

1. Every appliance receives the full supply voltage, so each works at its rated power.
2. Each branch is independent. A switch on one branch can turn that appliance on or off without affecting the others. If one bulb burns out, the rest keep working.

In a series circuit, the same current flows through all the appliances, and the voltage is shared among them. Each would get less than the required voltage, and a single break or switch-off would shut down everything.

Evaluate the options:

• A. Parallel connections do not heat up the wires. False. Wires heat up whenever current flows. The heating depends on the current and the wire's resistance (P = I²R), not on the type of connection. Many appliances in parallel actually draw a larger total current.
• B. Independence switches can be used. True. This is the awkwardly worded "independent switches can be used". Each appliance can have its own switch and be controlled independently.
• C. Less current will be used. False. In parallel, the total current is the sum of the branch currents, so it is larger, not smaller.
• D. Less voltage will be used. False. Each appliance gets the full supply voltage. It is series connection that divides the voltage.

Tip: Remember this for parallel circuits: "Same voltage, shared current, independent control." Whenever a JAMB question asks about household wiring, think "independence": one appliance off or faulty does not affect the others.