I-V Characteristics of P-N Junction Diode 🔥 | Knee Voltage Explained Practically

I-V Characteristic Curve of a P-N Junction Diode | DIY-TECH JOSHI

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In this educational video, we demonstrate the I-V (Current–Voltage) characteristics of a P-N junction diode under forward bias and reverse bias conditions, following the standard Physics lab practical procedure.

✅ Covered in this video:
Introduction to P-N junction diode
Principle of forward bias and reverse bias
Experimental setup using diode characteristics apparatus
Measurement of voltage and current in forward bias
Measurement of reverse saturation current in reverse bias
Plotting of I-V characteristic curves
Determination of knee voltage (cut-in voltage)
Observation and conclusion

🧰 Apparatus used:
P-N Junction Diode, Diode Characteristics Apparatus, Voltmeter, Ammeter / Micro-ammeter, Connecting Wires, Power Supply

🔩 Key Concepts:
Forward bias characteristics
Reverse bias characteristics
Knee voltage of P-N junction diode
Semiconductor behavior
Rectifying nature of diode

💡 Useful for:
Class IX / X / XI / XII Physics Practicals
CBSE • ICSE • State Board • School Lab Exams

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