Question

A galvanometer of resistance 50 hom gives full scale deflection with a current of 5 mA resistance of 0.1 ohm is connected in series o convert it into volt meter .find the range of voltmeter obtained

Answer 1

Answer:

R.E.F image 

Solution 

The equt circuit diagram of 

voltmeter will be 

So, 

15=5×10−3(a+s)  [onm's law]

⇒3000=50+s

⇒2950 Ω=s

So, a 2950Ω resistor should 

be combined in series with

galvanometer to convert it in to voltmeter.