What Makes a Complete Circuit?

Last updated at April 25, 2026 by

A simple electrical circuit needs four main parts.
These are an electric cell, connecting wires, a switch, and a lamp.
When all parts are connected properly, electricity flows and lamp glows.
Example
— A torch has all these parts inside it.

Circuit Components Electric Cell = Source of electricity Connecting Wires = Path for current to flow Switch = Controls the flow on/off Electric Lamp = Converts electricity to light
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CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

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