Advertisements
Advertisements
Question
Define the term ‘current sensitivity’ of a moving coil galvanometer.
Advertisements
Solution 1
The current sensitivity of a galvanometer is defined as the deflection produced in the galvanometer when a unit current flows through it.
Mathematically, it can be given by:
IS = `(NBA)/k`
Where k is the couple per unit twist.
Solution 2
Current sensitivity is defined as the deflection e per unit current.
RELATED QUESTIONS
The combined resistance of a galvanometer of resistance 500Ω and its shunt is 21Ω. Calculate the value of shunt.
An ideal voltmeter has _______.
(A) low resistance
(b) high resistance
(C) infinite resistance
(D) zero resistance
A moving coil galvanometer has a resistance of 25Ω and gives a full scale deflection for a current of 10mA. How will you convert it into a voltmeter having range 0 - 100 V?
Can a galvanometer as such be used for measuring the current? Explain.
With the help of a neat and labelled diagram, explain the principle and working of a moving coil galvanometer ?
Draw a labelled diagram of a moving coil galvanometer and explain its working. What is the function of radial magnetic field inside the coil?
State the principle of the working of a moving coil galvanometer, giving its labeled diagram ?
A moving coil galvanometer can be converted into an ammeter 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.
The figure below shows a circuit containing an ammeter A, a galvanometer G and a plug key K. When the key is closed:
