A potentiometer wire \( \mathrm{AB} \) is \( 100 \mathrm{~cm} \) long and \( \mathrm{P} \) has a...

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A potentiometer wire \( \mathrm{AB} \) is \( 100 \mathrm{~cm} \) long and
\( \mathrm{P} \) has a total resistance of \( 10 \mathrm{ohm} \). If the galvanometer shows zero deflection at the position C, then find the value of unknown resistance R.
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