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A potentiometer wire has length 4 m and ...

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

A

` 48 Omega`

B

`32 Omega`

C

`40 Omega`

D

`44 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
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