A wire of length 100 cm is connected to a cell of emf 2 V and negligible internal resistance. The resistance of the wire is 3 Ω Ω . The additional resistance required to produce a potential drop of 1 milli volt per cm is
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Verified by ExpertsThe correct answer is:
C
Let a resistance R be connected in series with the battery and wire
Voltage drop across wire
Let current in circuit be I
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