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

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This assembly is used for measuring conductivity of solution

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

P is the conductivity cell

unknown resistance is measured by using the formula, R2=R1R4R3

answer is C.

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Detailed 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,R2=R1R4R3

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