engineering physics MCQ #947

In a meter bridge, the null point is obtained at 40 cm. The ratio of resistances is?

engineering physics MCQ #947

  1. Question 1

    Q1. In a meter bridge, the null point is obtained at 40 cm. The ratio of resistances is?

    • A) 2:3
    • B) 3:2
    • C) 1:1
    • D) 4:6

    Answer: 2:3

    Explanation: R1/R2 = l/(100-l) = 40/(100-40) = 2/3.