The diagram above shows a balanced metre bridge, the value of x is
Attached Figure / Diagram
A
75.0 cm
B
66.7 cm
C
33.3 cm
D
25.0 cm
Verified Correct Answer: C.
Physical Principles & Numerical Solution
1/R = 1/8 + 1/8 = 2/8
∴ R = 4Ω
l/l1 = R/R1
(x)/(100-x) = 4/8
4(100-x) = 8x
400-4x = 8x
400 = 8x + 4x = 12x
x = 400/12 = 33.3cm
Source: Myschool Past Questions Archive (Record #14513)