A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected in series with the wire and an accumulator of emf 2V, so as to get a potential gradientof 1mV per cm on the wire is

Options

(a) 32Ω
(b) 40Ω
(c) 44Ω
(d) 48Ω

Correct Answer:

32Ω

Explanation:

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