1. why must the emf of the driver cell be greater than that of the cell under testing?
2. why is a potentiometer considered a voltmeter with infinite resistance?
3. what factors limit the accuracy of a potentiometer?
4.how would the accuracy of results obtained during this experiment be affected if the protective resistor is not switched out of the circuit?
5. what is the aim of reversing the terminals of the cell?
2. why is a potentiometer considered a voltmeter with infinite resistance?
3. what factors limit the accuracy of a potentiometer?
4.how would the accuracy of results obtained during this experiment be affected if the protective resistor is not switched out of the circuit?
5. what is the aim of reversing the terminals of the cell?
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