A galvanometer gives full scale deflection of 1 volt when acting like a volmeter when connected in series with `2 kOmega` resistance. The same galvanometer gives `500 mA`, full scale deflection when acting like a ammeter when connected with shunt resistance of value `0.2 Omega` in parallel. Find out the resistance of galvanometer.

Explanation

`V=I_(g) (R+G)`
`I=I_(g)(2000+G).....(1)` `0.5 I_(g)=0.2Omega`
`I=((0.1)/(G+0.2))(200+G)` `I_(g)G=(0.5-I_(g))xx0.2`
`G+0.2=200+0.1G` `I_(g).G=0.1-0.2I_(g)`
`G+0.2=200+0.1G` `I_(g)(G+0.2)=0.1`
`=0.9G=199.0`
`G=199.9`
.......=222W
0.9