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TUNGSTEN FILAMENT TEMPERATURE & RESISTIVITY

Experiment(s):

1. Estimation of filament temperature by the resistivity variation study



Specifications:

a) Tungsten filament
resistivity kit
Voltmeter: Digital DC 3½ digit voltmeter
Range: Selectable 0 - 200 mV or 0 - 20 V
Resolution: 0.1 mV or 0.01 V
Current meter: Digital DC 3½ digit
Range: Selectable 200 mA or 200 µA
Resolution: 0.1 mA or 0.1 µA
Internally connected circuit
with provision for changing load resistance
Load resistance: Selectable from
1 Ω to 80 Ω
Sample: Tungsten Filament bulb
Power supply: Regulated 5 V
DC fixed voltage power supply
Rated Input: 220 V/50 Hz
or 110 V/60 Hz

b) Patch cords
Set of standard 2 mm patch
cords of different lengths with
spare cords

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