A potentiometer wire of length 10 m and ...

A potentiometer wire of length 10 m and resistance `10 Omega` per meter is connected in serice with a resistance box and a 2 volt battery. If a potential difference of 100 mV is balanced across the whole length of potentiometer wire, then then the resistance introduce introduced in the resistance box will be

`1900 Omega`

`900 Omega`

`190 Omega`

`90 Omega`

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