Why do we call an ammeter a low resistance galvanometer?
Why do we call an ammeter a low resistance galvanometer?
The purpose of using a ammeter is to measure the amount of current flowing through any of the branch in the circuit. For this operation, the ammeter is always connected in series with the circuit element present in that particular branch.
If a ammeter is designed such that it has a considerably large resistance, it would change the magnitude of current flowing though it thus leading to errors in the measurement.
It would also cause unnecessary power dissipation
A galvanometer can detect only small currents. Thus, to measure large currents itis converted into an ammeter. It can be converted into an ammeter by connecting alow resistance called shunt resistance in parallel to the galvanomete
The purpose of using a ammeter is to measure the amount of current flowing through any of the branch in the circuit. For this operation, the ammeter is always connected in series with the circuit element present in that particular branch.
If a ammeter is designed such that it has a considerably large resistance, it would change the magnitude of current flowing though it thus leading to errors in the measurement.
It would also cause unnecessary power dissipation
A galvanometer can detect only small currents. Thus, to measure large currents itis converted into an ammeter. It can be converted into an ammeter by connecting alow resistance called shunt resistance in parallel to the galvanomete
