Question

The resistance of galvanometer is g ohm and the range is 1 volt .the value of resistance used to convert it into a voltmeter of range 10 volt is

Answer 1

Answer:

The current passing through the wire in which the galvanometer is connected will be ig=V/G where G is the resistance of the galvanometer.

Again, we know that the resistance required to convert the galvanometer into voltmeter of range 10V R = {(10V/ig) - G} where the G is the resistance of the galvanometer since the current ig is V/G hence on putting the value of ig in the equation we will get the value of R = 9G.

Answer 2

Answer:

9g Ω in series

Explanation:

The resistance of galvanometer is g ohm and the range is 1 volt .the value of resistance used to convert it into a voltmeter of range 10 volt is

range is 1 volt

Resistance = g ohm

Current Passing through it = 1/g A

High resistance need to be added ins eries to have additional 10-1 = 9V drop

=> R (1/g)  = 9

=> R = 9g

Value of additional Resistance used in series = 9g Ω

Total resistance required = 10g Ω