Skip to main content

Posts

Showing posts from September, 2022

Conversion of Galvanometer into an Ammeter

What is Ammeter? An Ammeter is an instrument that is used to measure the electric current in the electric circuits directly in Ampere. The instrument which measures the current of the order of milliampere $(mA)$ is called the milliammeter. The internal resistance of the ideal ammeter is always zero. What is Galvanometer? The galvanometer is an instrument that is used to measure the very small amount of the electric charge passing through the circuit. The internal resistance of the Galvanometer is not zero. When a Galvanometer is used in the circuit and connected in the series to measure the electric current: The galvanometer is used in series to measure the electric current of the circuit so that the whole amount of the current passing through it. but the galvanometer will have some resistance due to the resultant resistance of the circuit increasing and the current in the circuit somewhat decreasing. Therefore the current read by the Galvanometer is less than the actua