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Question

The resistance of decinormal solution of a salt occupying a volume between two platinum electrodes 1.80 cm apart and 5.4 cm2 area was found to be 32 ohm. Calculate eq.

A
114.1Scm2eq1
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B
124.1Scm2eq1
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C
104.1Scm2eq1
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D
134.1Scm2eq1
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Solution

The correct option is C 104.1Scm2eq1
Given R = 32 ohm, l=1.80cm,a=5.4cm2
k=1R=1R×1a=132×1.85.4=0.01041Sm1
eq=k×1000N=0.01041×10000.1=104.1Scm2eq1

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