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A cell can be balanced against and of potentiometer wire, respectively with and without being short circuited through a resistance of . Its internal resistance is:

  1. A
    Zero
  2. B
  3. C
  4. D

Solution & Step-by-step Explanation

The formula for internal resistance using a potentiometer is:

Where is the balancing length for open circuit (without resistance) and is for closed circuit (with resistance ).Given: , , .

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A cell can be balanced against and of potentiometer wire, respectively with and without being short circuited through a resistance of . Its internal resistance is:
A
Zero
B
C
D

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Current ElectricityPotentiometerInternal Resistance

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