Depending on the direction of the current, the pointer’s
deflection is either to the right or the left The galvanometer cannot as such be used as an
ammeter to measure the value of the current in a given circuit This is for
two reasons: (i) Galvanometer is a very sensitive device, it gives a full-
scale deflection for a current of the order of mA (ii) For measuring currents,
the galvanometer has to be connected in series, and as it has a large
resistance, this will change the value of the current in the circuit