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In a potentiometer setup, if the balancing length is found to be 50 cm for a 12V

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Question: In a potentiometer setup, if the balancing length is found to be 50 cm for a 12V battery, what is the potential difference per cm?

Options:

  1. 0.24 V/cm
  2. 0.20 V/cm
  3. 0.30 V/cm
  4. 0.15 V/cm

Correct Answer: 0.24 V/cm

Solution: 

The potential difference per cm is calculated as 12V / 50 cm = 0.24 V/cm.

In a potentiometer setup, if the balancing length is found to be 50 cm for a 12V

Practice Questions

Q1
In a potentiometer setup, if the balancing length is found to be 50 cm for a 12V battery, what is the potential difference per cm?
  1. 0.24 V/cm
  2. 0.20 V/cm
  3. 0.30 V/cm
  4. 0.15 V/cm

Questions & Step-by-Step Solutions

In a potentiometer setup, if the balancing length is found to be 50 cm for a 12V battery, what is the potential difference per cm?
Correct Answer: 0.24 V/cm
  • Step 1: Identify the total voltage from the battery, which is 12V.
  • Step 2: Identify the balancing length measured on the potentiometer, which is 50 cm.
  • Step 3: To find the potential difference per cm, divide the total voltage by the balancing length.
  • Step 4: Perform the calculation: 12V divided by 50 cm equals 0.24 V/cm.
  • Step 5: Conclude that the potential difference per cm is 0.24 V/cm.
  • Potentiometer Principle – A potentiometer measures the potential difference across a circuit by balancing it against a known voltage, allowing for the calculation of voltage per unit length.
  • Voltage Calculation – Understanding how to calculate voltage per unit length using the total voltage and the length of the potentiometer wire.
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