Which circuit has one path?

• A. Circuit with multiple paths
• B. Three-phase power system
• C. Circuit with one path
• D. Fuse protects circuits from overload

Answer: (C)

One path means there is a single loop for current to follow, which describes a series circuit. In a series setup, the same current travels through every component in order, so all parts share that one path back to the source. If a single element opens, the entire circuit is interrupted and current stops everywhere. This is different from circuits with multiple paths, where current can split and continue through other branches. A three-phase power system involves three separate conductors and paths, making it more complex than a single path. A fuse’s role is to protect against overload, not to define how many current paths exist in a circuit.