Physics
Diode In Simple Circuit
Effect of diode connection type on voltage drop across a resistor.
Mission
The effect of connection type of a diode in a simple circuit on the voltage drop across a resistor.
Curriculum Alignment
| Standard | Syllabus code | Topic | Coverage | Grades | |
|---|---|---|---|---|---|
| NGSS | Weak | 9–12 | |||
| British / IGCSE | 0625 §4.3.1/§4.2.4 | CAIE IGCSE Physics 0625 — 4.3.1 Supplement #2 (diode circuit behaviour) + 4.2.4 Supplement #4 (I-V graph for a diode) | Full | 9–10 | |
| IB | Weak | 11–12 | |||
| CBSE | Class 12 Semiconductor Electronics | CBSE/NCERT Class 12 Physics — Semiconductor Electronics (p-n junction diode, forward/reverse bias) | Full | 12–12 | Prescribed practical |
| AERO / AP | Weak | 9–12 |
Variables
What you change
- Diode bias
What you measure
- Voltage Drop
What you keep constant
- Wire length
- Wire cross section
- The voltage of the power source
- Temperature of wire
Equations
V_Bat = Battery Voltage
V_D = Diode Voltage
V_R = Resistance Volage
V_Bat = V_D + V_R
What You'll Need
- Breadboard 400 Tie Point
- Arduino Uno
- I2C LCD
- 25V Voltage Sensor Module
- 6V Battery Pack, 4x AA
- Diode
- Resistor
Estimated Time
Virtual mode 8 minTest mode 11 minExercise mode 10 min
Mind-Blowing Fact
Temperature- Technologically.
The way a temperature sensor works is through the measuring of the changes in the voltage the diode emits. As the temperature changes, the voltage emitted changes by a set amount. To get the temperature we just need to measure the output voltage and a little bit of math!
How You Can Run It
Virtual modeTest modeExercise modeView-only modeAccessibility modeTobii eye trackingVoice commandsAmericanBritishIB