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Grade 12Electric Current

in a potentiometer why does the current through the wire containing galvanometer become zero?

Profile image of Bijoy das
13 Years agoGrade 12
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1 Answer

Profile image of Sher Mohammad
12 Years ago


{R_2 \over R_1} = {\mbox{cell voltage} \over V_\mathrm{S}}

since at the balance point, ie the point when the voltage are balance the cell voltage, and the voltage due to potentiometer, the voltage difference will be zero , hence the current will be zero.