Answer :

Given:


Resistance of the galvanometer coil, G = 12Ω


Current for full scale deflection = 3mA



For converting a galvanometer into a Voltmeter we can connect a resistance in series with the galvanometer. A minimum value of current should be allowed to flow through the voltmeter.


Required range of the voltmeter = 0 to 18 V


V = 18


Let the resistance needed = Rs


…(1)


By plugging the values of V, G and Is in equation 1, we get,



Rs = 5988 Ω


For converting the galvanometer into a voltmeter of range 0-18 we can add a resistance of 5988Ω, is series with the galvanometer.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

(a) State the undPhysics - Board Papers

A multi range volPhysics - Exemplar

A multi-range curPhysics - Exemplar

A galvanometer coNCERT - Physics Part-I

A galvanometer coNCERT - Physics Part-I

Two moving coil mNCERT - Physics Part-I