Yes, a bulb in a complete circuit glows because of the flow of electric current through its filament.

Here's a more detailed explanation:

• Complete Circuit: A complete circuit provides a closed path for the electric current to flow from a power source (like a battery or wall outlet), through the bulb, and back to the power source.
• Current Flow: When the circuit is complete, electrons (which carry electric charge) begin to flow through the wires and the filament of the bulb.
• Filament Resistance: The filament inside the bulb is a thin wire made of a material (usually tungsten) that has a high resistance to the flow of electricity.
• Heat Generation: As the electric current passes through the high-resistance filament, it encounters friction. This friction causes the filament to heat up significantly.
• Incandescence: When the filament gets hot enough (usually thousands of degrees Celsius), it begins to emit light. This emission of light due to heat is called incandescence.

In summary, the flow of electric current through the resistive filament causes it to heat up to the point of incandescence, producing light.

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