Ab Is Wire Of Uniform Resistance

AB is a wire of uniform resistance. The galvanometer G shows no current when the length AC = 20 cm and CB = 80 cm. … a) 2Ω (b) 8Ω …

Answers:

Correct option(c)

Explanation:

R α AC (20 cm)

80 α CD (80 cm)

R/80 = 20/80

R = 20 cm