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A standerd cell emf 1.08 V is balance by...

A standerd cell emf `1.08 V `is balance by the potential difference across `91 cm` of a meter long wire applied by a cell of emf `2 V` through a series resistor of resistance `2 Omega`. The internal resistance of the cell is zero. Find the resistance per unit length of the potentiometer wire.

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To solve the problem step by step, we will follow the reasoning presented in the video transcript. ### Step 1: Understand the Problem We have a standard cell with an EMF of 1.08 V that is balanced by the potential difference across 91 cm of a potentiometer wire. The wire is part of a circuit powered by a 2 V cell with a series resistor of 2 Ω. We need to find the resistance per unit length of the potentiometer wire. ### Step 2: Calculate the Potential Difference Across the Potentiometer Wire The potential difference across the length of the potentiometer wire (91 cm) is equal to the EMF of the standard cell: \[ ...
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