VITEEE 2015 Paper

Given: current sensitivity =10 div/mA and there are 100 division on the scale.
∴ Current required for full scale deflection
Ig =

1

10

× 100 mA = 10 mA = 0.01 A
Also voltage sensitivity = 2 div/mV
∴ voltage required for full scale deflection
vg =

1

2

× 100 mV = 0.05 V
Galvanometer resistance is given by
G =

Vg

Ig

=

0.05

0.01

= 5Ω