Why are parallel circuits more widely used?

• A. They are cheaper to install
• B. They consume less power
• C. They allow multiple paths, ensuring that if one path fails, others can still function
• D. They require less conductor material

Answer: (C)

Parallel wiring provides multiple paths for current, with each device connected across the same two points. This means every device sees the same supply voltage and can operate independently of the others. If one branch breaks or a device is turned off, the others still have a path for current and stay powered, which is essential for reliable operation in real-world electrical systems. The idea that parallel circuits are cheaper to install or use less power isn’t generally correct, and you often need more conductor material to reach multiple loads. So the main advantage is the ability to maintain operation of all devices even if one path has an issue.