Where Ohm’s law holds — and where it failsओम नियम कहाँ लागू होता है — और कहाँ नहींWhere Ohm’s law holds — and where it fails

NCERT Fig 3.5–3.7 · Class 12 Physics · Chapter 3 · interactive diagram

Parts and what they mean

• Ohmic conductor (ओमीय चालक) — A straight line through the origin: R = V/I is constant (metals at constant temperature).
• Non-linear V–I (अरैखिक V–I) — V stops being proportional to I (deviation 1).
• Direction-dependent (दिशा पर निर्भर) — Reversing V does not give the same |I| — as in a diode (deviation 2, Chapter 14).
• GaAs: non-unique (GaAs: अद्वितीय नहीं) — The same current occurs at more than one voltage (deviation 3).

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 3.5–3.7. Report a mistake