DifferencesPhysics

Difference between Ammeter and Voltmeter

There are two ways to measure electricity; One by measuring current where an ammeter is used and the other by measuring voltage where a voltmeter is used.

Difference between Ammeter and Voltmeter

Both of these devices are used in electrical circuits but the main difference between voltmeters and ammeters is that ammeters are useful for measuring current and voltmeters are useful for measuring voltage or emf between two points in an electrical circuit.

What is Ammeter?

The expression is created by an ammeter. Measuring devices used in electrical equipment is an ammeter. It is used to measure current in a circuit. It makes very accurate measurements.

An ammeter can measure small currents, even in milliamps or microamps. An ammeter is placed in the path of series connection with the measuring circuit to measure the current. This is because any current in the circuit can pass through it.

What is Voltmeter?

A voltmeter is a commonly used instrument for measuring voltage in electrical equipment. It is connected in parallel with an electric circuit whose potential is to be measured.

The connection polarity of a voltmeter is the same as that of an ammeter ie. the positive terminal is connected to the positive polarity of the supply and the negative potential is connected to the negative polarity

Difference between Ammeter and Voltmeter

Ammeter Voltmeter
It is used to measure current. It is used to measure the voltage across two points.
Resistance is low. Resistance is high.
It is connected in series with the circuit and its accuracy is more. It is connected in parallel with the circuit and its accuracy is less.
Changing the range is not possible. Changing the range is possible.
For ideal ammeter, the value of resistance is 0. For an ideal voltmeter, the value of resistance is approximately infinity.
It is denoted by a symbol A. It is denoted by a symbol V.

 

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