What is Ammeter | Definition, Types, Summary
What is ammeter? Ammeter is a meter used to measure electric current flowing in a circuit. The unit of electric current is ampere hence the name ammeter (ampere +meter). The symbol of ammeter is as shown below. Ammeter is always connected in series with the circuit whose current is to be measured. In other words the current flows through the ammeter. As shown below. The ammeter consists of set of coils. These coils get deflected when current flows through them. Below are types of ammeter based on their construction and working. 1. Permanent magnet moving coil 2. Moving iron ammeter 3. Electro dynamometer ammeter 4. Rectifier ammeter Also ammeters are classified as AC ammeter and DC ammeter. Let us discuss every type in detail. 1. Permanent magnet moving coil – here the coil comprises of a conductor and magnetic ...