3 35 shows a 2 0 V potentiometer used for the determination Figure of internal resistance of a 1 5 V cell The balance point of

Question

3 35 shows a 2 0 V potentiometer used for the determination Figure of internal resistance of a 1 5 V cell The balance point of the cell in circuit is 76 3 cm When a resistor of 9 5 Q is used in the external circuit of the cell the balance point shifts to 64 8 cm length of the potentiometer wire Determine the internal resistance of the cell open A 1 5 V 9 5 2 www 2 0 V B

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