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An ammeter works by measuring the voltage across a very small resistor that is placed in series with the load. By Ohm's Law, current is voltage divided by resistance. Knowing the resistance of the series circuit and conducting those amps to a device that reacts differently with varying amount of amps you can accurately measure the amps of a circuit. Analogue meters use an electromagnetic coil that winds itself to different tensions depending on the amount of current. Connect it to a needle and put a chart behind it that has been calibrated to the coil and you have created a device for measuring current. The strength of the electromagnetic field is proportional to the current, or amps, so the distance the needle moves will also be proportional to the current.
What else can I help you with?
How range of a ammeter is extended?
if we take resistance in parallel with ammeter then the range of ammeter will change.
What are the parts of an ammeter?
ammeter real picture
What is a ammeter on Mars?
An Ammeter and a brick is a brick.
How do you check a dc ammeter?
a dc ammeter is a ammeter which has three pins and it works by two wires.
How you connect an ammeter to a circuit?
How do you connect an ammeter to a circuit?
How do you connect a ammeter into a circuit?
connect ammeter in series with load.
What is the difference between ac ammeter and dc ammeter?
dc ammeter has three connecting pins while ac has four
What devises measures currents?
An ammeter, or multimeter (which includes an ammeter setting).
What is the importance of ammeter?
An ammeter measures current, an important variable in electronics.
How do you measure voltage using a ammeter?
An ammeter measures amperage not voltage.
What is resistance of an ideal ammeter?
ideal ammeter has zero internal resistance
To increase the range of a dc ammeter you would use a?
To increase the range of an ammeter, you connect a very low impedance resistor in parallel with the ammeter.
