JEE Main 8 Jan 2020 Shift 1 Solved Paper
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The length of a potentiometer wire is 1200 cm and it carries a current of 60 mA. For a cell of emf 5V and internal resistance of 20Ω, the null point on it is found to be a 1000cm. The resistance of whole wire is :
[8 Jan 2020 Shift 1]
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