Question

State 2 reason why galvanometer cannot be used to measure current in the circiut

Answer 1

It is because of two reasons...

Firstly, a Galvanometer is a highly current sensitive device which would shows large deflections even with the passage of small amount of currents through it.

Secondly, it has a very high resistance value which can alter the magnitude of current flowing through it.

We can however convert it into an ammeter by shunting it properly.

Answer 2

Hey !!

A galvanometer cannot be used as such to measure current due to following two reasons :

• A galvanometer has a finite large resistance and is connected in series in the circuit, so it will increase the resistance of circuit and hence charge the value of current in the circuit.
• A galvanometer is a very sensitive device, it gives a full scale deflection for the current of the order of microampere, hence if connected as such it will not measure current of the order of ampere.

GOOD LUCK !!