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A potentiometer wire has length 4 m and ...

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

A

`44Omega`

B

`48Omega`

C

`32Omega`

D

`40Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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