Question

In an experiment of meter bridge, a null point is obtaining at the center of the bridge wire. When a resistance of `10 ohm` is connected in one gap, the value of resistance other gap is
A. `10 Omega`
B. `5 Omega`
C. `(1)/(5) Omega`
D. `500 Omega`

Answer 1

Correct Answer - A
(a) Wheatstone bridge is balanced, therefore
`(P)/(Q) = (R )/(S)` or `1 = (10)/(S) implies s = 10 ohm`