To know the resistance of a galvanometer by half deflection method

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

To know the resistance

G

of a galvanometer by half deflection method, a battery of emf

V_E

and resistance

R

is used to deflect the galvanometer by angle

\theta

. If a shunt of resistance

S

is needed to get half deflection then

G

R

and

S

are related by the equation: (1)

S(R+G) = RG

(2)

2S(R+G) = RG

(3)

2G = S

(4)

2S = G