Symbols used in circuit diagramsपरिपथ आरेखों में प्रयुक्त प्रतीक

NCERT Table 11.1 · interactive diagram

Parts and their functions

• Electric cell (विद्युत सेल) — Longer thin line = positive (+) terminal, shorter thick line = negative (−) terminal.
• Battery (बैटरी) — Two or more cells joined in series (+ of one to − of the next).
• Plug key / switch — open (प्लग कुंजी / स्विच — खुला) — Circuit broken: no current flows.
• Plug key / switch — closed (प्लग कुंजी / स्विच — बंद) — Circuit complete: current flows.
• Wire joint (तारों का जोड़) — A dot means the wires are connected.
• Wires crossing without joining (बिना जुड़े एक-दूसरे को पार करते तार) — No dot, wires are not connected.
• Electric bulb (विद्युत बल्ब) — Glows when current flows through its filament.
• Resistor (resistance R) (प्रतिरोधक (प्रतिरोध R)) — A component that offers a fixed resistance.
• Variable resistance / rheostat (परिवर्ती प्रतिरोध / धारा नियंत्रक) — Used to change the current in a circuit without changing the source voltage.
• Ammeter (ऐमीटर) — Measures current. Always connected in series. + terminal towards the + of the battery.
• Voltmeter (वोल्टमीटर) — Measures potential difference. Always connected in parallel across the two points.

Original diagram drawn by Simple Learning Hub, based on NCERT Table 11.1. Report a mistake