First slide

meter bridge

Question

A resistance wire connected in the left gap of a meter bridge balances a $10 Ω$ resistance in the right gap at a point which divides the bridge wire in the ratio 3 : 2. If the length of the resistance wire is 1.5 m, then the length of $1 Ω$ of the resistance wire is :

Moderate

Solution

$\begin{array}{l} \frac{x}{10} = \frac{3}{2} \\ x = 15 Ω \end{array}$
$\begin{array}{l} 15 Ω1 .5 m \\ 1 Ω? \end{array}$
then resistance of wire is $= \frac{1.5}{15} = 1 x 10^{- 1} m$

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