Ampere Meter 15A AC 72mm Square designed explicitly to measure the magnitudes of the current in a circuit. . This Ampere Meter is one of the prominent devices used by an electronics technician. This Analog Ammeter can measure at a range of 0A to 15A. The ammeter is usually connected in series with the circuit in which the current is to be measured. An ammeter usually offers low resistance so that it does not cause a significant voltage drop in the circuit being measured.
While Measuring the current in the smaller range in the milliampere or microampere range, are designated as milliammeters or microammeters. An ampere meter is represented by the letter ‘A’ in a circuit. The ammeter operates based on the principle of low resistance and inductive reactance. Ammeter offers a very low impedance as the voltage drop across the ammeter should be below. Moreover, connecting an ammeter in parallel may result in a short circuit and the current passing through the ammeter might burn the instrument. For an ideal ammeter, the impedance must be zero so that the voltage drop across the instrument is zero