answer my question which is in the image
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Increase the cross sectional area of wire you are using .If you are using a wire of unit cross sectional area then after doubling cross sectional area the resistance will be 1/4 of its previous value .Then record voltage by using voltmeter .When using 2nd wire the voltage drop is less than the 1st wire as V is directly proportional to R(Ohms law).
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