What is the difference between ammeters and amp meters?

Answer 1

An Ammeter connects a low impedance on the test points, so the equivalent of that is a "short circuit" between the test points. This is done to avoid a drop of current on the tested circuit. A Voltmeter connects a high impedance on the test points, so the equivalent of that is a "open circuit" between the test points. This is done to avoid a drop of voltage on the tested circuit. ---------

In terms of external connections Ammeter (used to measure current) is connected in series of the circuit (through which the current flow need to be measured) and voltmeter (used to measure voltage) is connected in parallel to points in circuit (across which voltage needs to be measured).

Answer 2

• An ammeter measures current while a voltmeter measures voltage
• An ammeter is always connected in series while a voltmeter is connected in parallel
• • To convert a galvanometer into an ammeter, a shunt (very small resistance) must be connected parallel to the galvanometer coil.
  • To convert a galvanometer into a voltmeter, a large resistance must be connected in series with the galvanometer coil.

Answer 3

You can convert an ammeter into a voltmeter by adding a series resistor.

You calibrate by considering the total resistance, meter plus resister, and by considering the current that would flow if a certain voltage were applied.

Generally, you do not use an ammeter for this application - you use a micro ammeter, because you want to maximize the equivalent impedance so as to not disturb the circuit under test.

Answer 4

They both measure the amperes in a circuit.

If you go to the store and ask for an ammeter you will get a meter that with the right circuitry attached will measure amps. That little meter on the front of a battery charger is an ammeter.

If you purchase a piece of equipment that measures the current in a circuit you should get an amp meter.

Answer

An 'ammeter' is an instrument for measuring current. An 'amp meter' is an incorrect term for an ammeter.

Answer 5

The difference is that the voltmeter is a lulu

Answer 6

A voltmeter is used to measure units of electrical pressure, and an Amp meter is used to measure the amount of electron flow (AMPS), through a circuit.

Answer 7

ammeter-- use to measure current, connected in series, have resistance ideally equal to 0.

voltmeter- measure voltage, connected in parallel, have resistance ideally equal to infinity.

Answer 8

A potentiometer is an adjusting device usually for voltage while a voltmeter is a device for measuring the voltage.