Reference:

Ballastic Galvanometer

Experiment(s):

Determination of charge sensitivity

Specifications

1 . Ballistic Galvanometer

                    Resistance:
100 Ohms (OHM-201/168/A)
or
500 Ohms (OHM-201/168/B)
Time period: 10 to 12 sec
Current sensitivity: 0.3 μA/ div
Critical damping resistance: 1000Ω
Type: Moving coil
Zero adjust: Yes
Lock: Yes
Wire: Phosphor bronze
suspension wire
Mirror: Concave, F=100 cm
Dimensions: 150 mm x 150mm x 250mm

                  

2 . Laser and scale arrangement

                    Source: Semi-conductor Laser
Focal length: NA
Spot distance: 10 cm to 10 m
Base: Heavy cast iron
Scale: Translucent engraved, 50 cm
Rated Input: 220 V/50 Hz or 110 V/60 Hz
                  

3 . Lamp and scale arrangement

                    Source: Tungsten bulb
Focal length: adjustable (1m~2m)
Spot: Line
Base: Heavy cast iron
Scale: Translucent engraved, 50 cm
Rated Input: 220 V/50 Hz or 110 V/60 Hz
                  

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