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  • Potentiometer Principle
  • Applications to measure potential difference
  1. To Compare emf. of Cells
  2. To Find Internal Resistance (r) of a Cell
  3. Application of potentiometer
  1. Voltage Divider
  2. Audio Control
  3. Potentiometer as a senor
  • Advantages of a Potentiometer Over a Voltmeter
  1. Merits
  2. Demerits
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