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A galvanometer has resistance math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymi mathvariant=normalG/mi/math and it is shunted by a shunt math xmlns=http://www.w3.org/1998/Math/MathMLmi mathvariant=normalS/mi/math. To keep main current constant, let math xmlns=http://www.w3.org/1998/Math/MathMLmix/mi/math resistance be connected in series with galvanometer. The value of math xmlns=http://www.w3.org/1998/Math/MathMLmix/mi/math is.
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