Potentiometer wire of length \( 1 \mathrm{~m} \) is connected in series with \( 490 \Omega \) re...

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Potentiometer wire of length \( 1 \mathrm{~m} \) is connected in series with \( 490 \Omega \) resistance and \( 2 \mathrm{~V} \) battery. If \( 0.2 \mathrm{mV} / \mathrm{cm} \) is the potential gradient, then the resistance of the potentiometer wire is:
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