Question

a symbol from a circuit diagram is shown. what does this symbol represent? a switch a light bulb a wire a battery

Explanation:

In circuit diagrams, the symbol with a circle and an 'X' inside is the standard symbol for a light bulb. A switch has a different symbol (usually a breakable line), a wire is a simple line, and a battery has a symbol with two parallel lines (one longer, one shorter). So this symbol represents a light bulb.

Answer:

a light bulb