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Slide Wire

Find the balance point on a long wire. Compare cells and find internal resistance.

Physics · Class 12 · The potentiometer · 6 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. First balance: The potentiometer
  2. Compare two cells: Balance length grows with emf
  3. Driver with a resistor: Only the wire's share counts
  4. Make it sensitive: A small gradient for a small voltage
  5. Shunt the cell: A shunt shows the lost volts
  6. r from two shunts: Two shunts fix r