JEE Exam » Difference Between » Ammeter and Galvanometer

Ammeter and Galvanometer

In this article, we will discuss the capacity of an ammeter, how the ammeter functions, what is a galvanometer and the utilization of a galvanometer.


A gadget estimating the electric flow in a circuit is called an ammeter. The SI unit of current is ampere. As the gadget estimates current in ampere, it is named an ammeter. The primary capacity of the ammeter is to gauge immediate or backhanded electric flow.

How does the Ammeter function?

The ammeter estimates the electric flow through a bunch of loops with a low worth of obstruction and inductive reactance. An ammeter is planned with the rule that the obstruction and inductive reactance ought to have a low worth. To have a similar current all through, the circuit association in the ammeter should be in series.

Kinds of Ammeter

Ammeter is grouped into the accompanying kinds relying upon the developing standard. The extremely durable magnet moving curl ammeter: In this kind, the ammeter is kept in the shaft of a long-lasting magnet. Here, the greatness of the current doesn’t influence the diversion in the curl. Direct current is estimated by this ammeter. Rectifier type ammeter: Alternating current is estimated by this kind of ammeter. Moving iron ammeter: Current going through the curl influences the diversion of the loop. Both immediate and exchanging current are estimated by this ammeter. Electrodynamometer type ammeter: It is more precise than different sorts of the ammeter. It likewise gauges both the flows. Contingent upon the current estimation, the ammeter is separated into additional two kinds. They are AC ammeter and DC ammeter.

Utilization of Ammeter

  • To check the circuit issues, electrical technicians utilize an ammeter
  • It is utilized to inspect the temperature in a thermocouple
  • It estimates the electric flow created by the circuit
  • The appropriate working of electronic gadgets is checked by an ammeter


A gadget that acts little electric flow delivered by the diversion of a moving curl is known as a galvanometer.

How does a Galvanometer respond?

The attractive impact of electric flow is the functioning guideline of the galvanometer. A movement is seen in the galvanometer’s needle if there is a current in the circuit.

Kinds of Galvanometer

  • Tangent galvanometer
  • Mirror galvanometer
  • Ballistic galvanometer
  • Astatic galvanometer

What is the Decreased Element of the Digression Galvanometer?

To create a particular diversion, how much current is expected to go through the galvanometer is known as the decrease element of the digression galvanometer.

Utilization of a Galvanometer

  • Laser TV, laser shows, laser etching, and so forth use galvanometers to deal with their frameworks
  • The galvanometer is utilized to quantify the state of hard drives and CD players
  • The major critical contrast between an ammeter and a galvanometer is that the ammeter shows just the magnitude of the current
  • While the galvanometer shows both the direction and magnitude of the current
Also See:


The galvanometer and ammeter both are estimating instruments. The ammeter is the execution of the galvanometer which shows the specific worth of current that goes through it in units as well.

Frequently asked questions

Get answers to the most common queries related to the IIT JEE Examination Preparation.

How can a galvanometer be utilized as an ammeter?

Answer: A galvanometer is utilized for estimating or for recognizing little flows. In any case, by changing ...Read full

What is shunt resistance?

Answer: A resistor with a low worth of obstruction is known as shunt opposition. The material utilized in th...Read full

What is the decrease factor?

Answer: A decrease factor is utilized in a digression galvanometer which is equivalent to the curre...Read full

Why was the opposition of an ammeter kept low?

Answer: The obstruction of an ammeter is kept low since when the opposition range is kept at high q...Read full

For what reason is an ammeter generally associated in series?

Ans. An ammeter is generally associated with series because the inward opposition of an ammeter is ...Read full

For what reason is a galvanometer utilized?

Answer: A galvanometer is an instrument for estimating a little electrical flow or an element of th...Read full

Would a galvanometer be able to gauge voltage?

Answer: A galvanometer can be made into a voltmeter to gauge voltage by associating a high oppositi...Read full

For what reason is ammeter utilized?

Answer: Ammeter, an instrument for estimating either immediate or substituting electric flow, in am...Read full

Does the galvanometer avoid to the left or right when?

Answer: Here, when the south pole is brought close to the loop, clockwise current streams in the ci...Read full