74 An unknown resistance R is connected in series with

Last updated: 6/14/2023

74 An unknown resistance R is connected in series with resistance 109 When the combination is connected to left gap of a metre bridge and R is connected to right gap balance point from left end is at 50 cm When the 10 Q is removed the balance point shifts to 40 cm The value of R is 1 200 3 60 Q 2 10 Q 4 40 Q