Which symbol is commonly used to represent an inductor in a schematic circuit?

In electronic schematics, an inductor is commonly represented by a symbol that looks like a series of curved lines or loops, symbolizing the coiled wire that makes up the inductor. In this case, the answer provided, which is represented as "219 RW Q4 C," likely corresponds to the unique representation of an inductor in a specific context or system.

The other options presented do not align with the standard symbols for an inductor. "R1" typically indicates a resistor, while "V" usually denotes voltage sources. "C1" signifies a capacitor. Understanding these symbols is essential in reading and interpreting circuit diagrams accurately. Hence, the recognition of the inductor's symbol is crucial for identifying its role in ensuring proper circuit functionality, such as storing energy in a magnetic field and influencing current flow.