LDR: Light level and Resistance

Light source
LDR
OHMMETER
Ω
— Ω

Method

You are investigating how light level affects the resistance of an LDR
  1. Set a light level using the slider.
  2. Read the resistance on the ohmmeter.
  3. Type your light level (%) and resistance (kΩ) into the table.
  4. Repeat for at least 6 light levels.
  5. Plot a line graph to show your results. Plot the Light Level on the horizontal axis and the Resistance on the vertical axis.
  6. What is the relationship between light level and resistance of the LDR?

Results table

Light level (%) Resistance (kΩ) Action