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JEE Main 12 Jan 2019 Shift 1 Solved Paper

Section: Physics
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Question : 28 of 90
 
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An ideal battery of 4 V and resistance R are connected in series in the primary circuit of a potentiometer of length 1 m and resistance 5Ω. The value of R, to give a potential difference of 5 mV across 10 cm of potentiometer wire, is :
[12 Jan 2019 Shift 1]
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