SIMPLE GALVANOSCOPE

Galvanoscopes were earlier instruments, which showed the presence of current and gave only a rough indication of its magnitude.
Our galvanoscope consists of a plastic former with socket terminals.
There is a circle marked, divided and figured every 45°, with a 75mm magnetic needle with brass bearing, pivoted at its centre.
A coil wound with 30 turns of an enameled copper wire is used to set up the magnetic field which deflects the magnetic needle; when current passes through it.
The galvanoscope operates on 4-6V.

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