Problem: Consider an unknown dry cell for which a potentiometer is balanced when the variable resistance is Rx = 1.7 Ω, while an alkaline standard cell with an emf of 1.2 V requires RS = 1.25 Ω to balance the potentiometer.Randomized VariablesES = 1.2 VRX = 1.7 ΩRS = 1.25 ΩCalculate the emf of the dry cell, in volts

FREE Expert Solution

Consider the relation:

emfx=emfsRxRs

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Problem Details

Consider an unknown dry cell for which a potentiometer is balanced when the variable resistance is Rx = 1.7 Ω, while an alkaline standard cell with an emf of 1.2 V requires RS = 1.25 Ω to balance the potentiometer.


Randomized Variables

ES = 1.2 V

RX = 1.7 Ω

RS = 1.25 Ω


Calculate the emf of the dry cell, in volts

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