JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Application +4 | -1

A potentiometer having the potential gradient of

2\,\,mV/cm

is used to measure the difference of potential across a resistance of

10\,\,ohm

. If a length of

50\,\,cm

of the potentiometer wire is required to get the null point, the current passing through the

10\,\,ohm

resistor is (in

mA

)

View answer and explanation

Correct option: D

Option C (0.01) is correct because the degree of dissociation is the ratio of equivalent conductivity at a given concentration to that at infinite dilution.

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