Question

If balancing point is obtain at 25cm in
meter bridge the ratio of resistance
in gap is
2R
1.4
4:3
1:3​

Answer 1

The meter bridge the ratio of resistance in the ratio of 1:3.

Explanation:

Balance point is obtained at $25cm$ in a meter bridge.

balance point is obtained at $25cm$, we can consider Balanced Wheatstone Bridge condition such that the adjacent resistances will be in ratio.

Let the resistances be p and q l be the balance point:

$\frac{P}{Q}=\frac{1}{100-1}$

$\frac{P}{Q}=\frac{25}{100-25}$

$=\frac{25}{75}$

$=\frac{1}{3}$

so, that resistance will be in the ratio of 1:3.