Limitations of Ohm’s Law | Class 12 Physics Current Electricity | CBSE 2025-26
Автор: Mandeep Education Academy
Загружено: 2025-08-17
Просмотров: 617
Описание:
In this Class 12 Physics video (Chapter 3 – Current Electricity), we explain the limitations of Ohm’s Law with clear examples.
Ohm’s Law states that current is directly proportional to voltage across a conductor (V = IR), but this law is not universally valid. In this video, we discuss the conditions where Ohm’s Law fails and why it cannot be applied in certain materials and situations.
📌 Topics Covered:
✔️ Situations where Ohm’s Law is not valid
✔️ Non-ohmic devices (semiconductors, diodes, transistors, vacuum tubes)
✔️ Effect of physical conditions (temperature, pressure, etc.)
✔️ Limitations in electrolytes, gases, and filament lamps
✔️ Important CBSE 2025-26 exam points
💡 Useful for Class 12 CBSE, ISC, State Boards, JEE & NEET preparation.
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