Ballistic Galvanometer (Improved Pattern)
i) These galvanometer are rigid in construction, beautiful in design and easy to operate, with large
periodic time.
ii) Large moment of Inertia of the moving part of the galvanometer.
iii) Deflection closely proportional to the electric charge.
iv) Ballistic Galvanometers undergo strict laboratory check before dispatch and are suitable for direct
deflection measurements which are closely proportional to the current.
v) These galvanometers can be used both as PERIODIC as well as APERIODIC instruments.
vi) An arrangement is provided in the instrument to make it APERIODIC by introducing a suitable
resistance in parallel with the moving coil system.
vii) Zero adjusting and locking devices are provided. The Phosphor-bronze suspension strip prevents shifting of zero.
viii) The moving coil carries a specially polished front silvering concave mirror of 100cm. focal length,
suitable for use with Lamp and Scale Arrangement.
a) Galvanometer Resistance 100 Ohms and Time period Approximate 10-12 Seconds.
b) Galvanometer Resistance 500 ohms and Time period Approximate 10-12 Seconds