Conversion of galvanometer into voltmeter
In this topic we will discuss about the ‘ Conversion of galvanometer into voltmeter ‘ . What is ammeter? and how can we convert a Galvanometer into voltmeter?
Before to read this topic ‘ Conversion of galvanometer into voltmeter ‘ students must know about the galvanometer and shunt .
To get the notes on galvanometer click here-
To get the notes on shunt click here-
This topic is very important topic for class 12th board examination and for other competitive examination ( for medical and engineering entrance examinations )
It is high resistance galvanometer used to measure potential difference between two points of a conductor or circuit.
A galvanometer can be converted into voltmeter by connecting high value resistance in series with the galvanometer( as shown in figure).
To get the syllabus of class 12th physics click here-
Let, G is the resistance of the galvanometer,
IG is the current passes through the galvanometer,
R is the high value resistance in series with the galvanometer.
V is the potential difference of the galvanometer.
So we can write V = IG ( R + G)
Hence R =( V/IG)- G ;
Resistance of the voltmeter Rs = R + G ;
So we can say ,for ideal voltmeter the resistance of the voltmeter should be infinity.
This topic is very important for all state class 12th board examination and for other entrance examination , therefore it is important to solve the assignment of this topic .
In the assignment , we provide all kind of questions like , objective , short answer type, long answer type , numericals and hots . After solving the assignment of this chapter students will be able to improve there knowledge on this chapter.
To get the complete assignment of magnetic effect of current click here-
But students must solve the questions base on its previous topic.
We are providing the link , so that students should clear all topic of this chapter- click here for ammeter