Question:
A potentiometer having a wire of length 10 m and resistance
Last updated: 6/24/2023
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A potentiometer having a wire of length 10 m and resistance 20 Q is connected to an accumulator of e m f E through a resistance box When the resistance in the box is 20 a null point is observed at 5 m for a cell of e m f E The ratio of E to E is A 1 4 C 3 1 B LD 2 1 4 1