Posterous theme by Cory Watilo

2.13 practical

2.13 practical

24 November 2010

10:15
· 2.13 describe the qualitative variation of resistance of LDRs with illumination and of thermistors with temperature
· Select the 20kΩ range on the multimeter
· Connect an LDR to the multimeter
· Use your thumb to cover the LDR
· Connect a thermistor to the multimeter
· Rub the thermistor between your finger and thumb to warm it up
· Fill in the following results tables

LDR


Light


Dark


Resistance (kΩ)


Resistance (high/low)


Thermistor


Hot


Cold


Resistance (kΩ)


Resistance (high/low)