First slide

Conductivity , Molar conductivity and Equivalent Conductivity

Question

Which of the following information(s) is/are false for this figure?

Easy

A

This assembly is used for measuring conductivity of solution
B

O is an oscillator, i.e, a source of AC power
C

P is the conductivity cell
D

unknown resistance is measured by using the formula, $R_{2} = \frac{R_{1} R_{4}}{R_{3}}$

Solution

Wheatstone bridge consists of two resistance, R₃ and R₄ and a variable resistance R₁ and conductivity cell having unknown resistance R₂.It is fed by an oscillator O(a source of AC power in the range of 550 to 5000 cycles per second). P is suitable detector and bridge is balanced, when no current passes through the detector. Unknown resistance,
$R_{2} = \frac{R_{1} R_{4}}{R_{3}}$

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