Moving Coil Galvanometer Construction And Working Pdf


By Kristin B.
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17.04.2021 at 01:43
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moving coil galvanometer construction and working pdf

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It is a device that is used to measure and detect the small amount of electric charge i.

The Galvanometer development was done from the observation of a magnetic compass needle when it deflects close to an electrical wire. This was the primary connection established between electricity as well as magnetism. He discovered the frog galvanoscope principle in the year that is; electric current will make the dead frog legs jerk. The first galvanometer was not adjusted; however, after its developments were utilized like measuring instruments called as ammeters.

Moving Coil Galvanometer

We have discussed currents and voltages in the previous sections and in many instances, we are required to measure them. But how do we perform the measurements? We have read about voltmeter that is used to measure the voltage across two points in a circuit, or an ammeter that is used to measure the current in a circuit. A moving coil galvanometer is one such device. In this section, we will learn about a moving coil galvanometer that is used to measure the current in a circuit. Table of Contents 1.

Galvanometer

Moving coil galvanometer. Moving coil galvanometer is a device which is used to indicate the flow of current in an electrical circuit. When a current carrying loop is placed in a uniform magnetic field it experiences a torque. A moving coil galvanometer consists of a rectangular coil PQRS of insulated thin copper wire. The coil contains a large number of turns wound over a light metallic frame. A cylindrical soft-iron core is placed symmetrically inside the coil as shown in Figure 3.

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Definition: The galvanometer is the device used for detecting the presence of small current and voltage or for measuring their magnitude. The galvanometer is mainly used in the bridges and potentiometer where they indicate the null deflection or zero current. Principle: The potentiometer is based on the premise that the current sustaining coil is kept between the magnetic field experiences a torque. The moving coil, suspension, and permanent magnet are the main parts of the galvanometer. It is rectangular or circular and has the number of turns of fine copper wire. The coil is freely moved about its vertical axis of symmetry between the poles of a permanent magnet.


When a current-carrying coil is suspended in a uniform magnetic field it is acted upon by a torque. Under the action of this torque, the coil rotates.


What is a Galvanometer : Working, Construction & Its Applications

In this article, we shall study principle, construction, working, sensitivity and accuracy of the moving coil galvanometer. When a current-carrying coil is suspended in a uniform magnetic field it is acted upon by a torque. Under the action of this torque, the coil rotates and the deflection in the coil in a moving coil galvanometer is directly proportional to the current flowing through the coil. The suspended type consists of a rectangular coil of thin insulated copper wires having a large number of turns.

Explain the principle construction of Moving coil galvanometer.

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1 Comments

John H.
19.04.2021 at 03:44 - Reply

So let us start our topic.

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