Physics
Relation Between Voltage And Light Using LDR
Effect of light intensity on the resistance of an LDR.
Mission
The effect of light intensity on the resistance of an LDR.
Curriculum Alignment
| Standard | Syllabus code | Topic | Coverage | Grades | |
|---|---|---|---|---|---|
| NGSS | Weak | 9–12 | |||
| British / IGCSE | 0625 §4.3.1 | CAIE IGCSE Physics 0625 — 4.3.1 Supplement #2 (circuit diagrams with light-dependent resistors (LDRs), know how they behave) | Full | 9–10 | |
| IB | DP B.5 | DP Physics — Theme B.5 Current and circuits | Partial | 11–12 | |
| CBSE | Weak | 10–12 | |||
| AERO / AP | Weak | 9–12 |
Variables
What you change
- Light intensity
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_LDR = LDR Voltage
V_R = Resistance Volage
V_Bat = V_LDR + V_R
What You'll Need
- Breadboard 400 Tie Point
- Arduino Uno
- I2C LCD
- 25V Voltage Sensor Module
- LDR
- 6V Battery Pack, 4x AA
- Resistor
Estimated Time
Virtual mode 8 minTest mode 12 minExercise mode 11 min
Mind-Blowing Fact
High voltage, rock n' roll.
The chords A, C, D and C are used in the AC/DC song High Voltage.
How You Can Run It
Virtual modeTest modeExercise modeView-only modeAccessibility modeTobii eye trackingVoice commandsArduino integrationAmericanBritish