हिंदी

Outline the Necessary Steps to Convert a Galvanometer of Resistance Rg into an Ammeter of a Given Range ?

Advertisements
Advertisements

प्रश्न

Outline the necessary steps to convert a galvanometer of resistance RG into an ammeter of a given range ?

Advertisements

उत्तर

 Conversion of a galvanometer to ammeter

• A shunt (low resistance) is connected in parallel with the galvanometer.

`S = ((I_g)/(I -I_g))G`

Where,

→ Total current in circuit

→ Resistance of the galvanometer

S →Resistance of the shunt

Ig → Current through galvanometer

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2010-2011 (March) All India Set 3

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Why is it necessary to introduce a cylindrical soft iron core inside the coil of a galvanometer?


Write current sensitivity of a galvanomete S.I. unit. 


Figure shows two circuits each having a galvanometer and a battery of 3V.

When the galvanometers in each arrangement do not show any deflection, obtain the ratio R1/R2.


State the underlying principle of working of a moving coil galvanometer. Write two reasons why a galvanometer can not be used as such to measure current in a given circuit. Name any two factors on which the current sensitivity of a galvanometer depends.


A moving coil galvanometer has a coil of resistance 59 Ω. It shows a full-scale deflection for a current of 50 mA. How will you convert it to an ammeter having a range of 0 to 3A?


A galvanometer having a coil resistance of 60 Ω shows full-scale deflection when a current of 1.0 amp passes through it. It can be converted into an ammeter to read currents up to 5.0 amp by:


A galvanometer shows full-scale deflection for current Ig. A resistance R1 is required to convert it into a voltmeter of range (0 - V) and a resistance R2 to convert it into a voltmeter of range (0 - 2V). Find the resistance of the galvanometer.


A resistance of 3Ω is connected in parallel to a galvanometer of resistance 297Ω. Find the fraction of current passing through the galvanometer.


A voltmeter has a range of 0 - 20 V and a resistance of 500 Q. Explain how can be used to measure voltages from 0 - 200 volt?


Assertion: When an electric current is passed through a moving coil galvanometer, its coil gets deflected.

Reason: A circular coil produces a uniform magnetic field around itself when an electric current is passed through it.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×