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)
· 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)