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In a potentiometer experiment, if the known voltage is increased, what happens t

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Question: In a potentiometer experiment, if the known voltage is increased, what happens to the balance point?

Options:

  1. It moves towards the positive terminal.
  2. It moves towards the negative terminal.
  3. It remains unchanged.
  4. It becomes unstable.

Correct Answer: It moves towards the positive terminal.

Solution: 

Increasing the known voltage will cause the balance point to move towards the positive terminal, as a higher voltage requires a longer length of wire to balance.

In a potentiometer experiment, if the known voltage is increased, what happens t

Practice Questions

Q1
In a potentiometer experiment, if the known voltage is increased, what happens to the balance point?
  1. It moves towards the positive terminal.
  2. It moves towards the negative terminal.
  3. It remains unchanged.
  4. It becomes unstable.

Questions & Step-by-Step Solutions

In a potentiometer experiment, if the known voltage is increased, what happens to the balance point?
Correct Answer: Balance point moves towards the positive terminal.
  • Step 1: Understand what a potentiometer does. It measures voltage by comparing it to a known voltage.
  • Step 2: Identify the known voltage in the experiment. This is the voltage you are adjusting.
  • Step 3: Recognize that increasing the known voltage means you are making it stronger.
  • Step 4: Realize that to balance the stronger voltage, you need more length of wire in the potentiometer.
  • Step 5: Conclude that as you increase the known voltage, the balance point will move towards the positive terminal of the battery.
  • Potentiometer Principle – The balance point in a potentiometer is determined by the ratio of the known voltage to the length of the wire, where an increase in voltage requires a longer length to achieve balance.
  • Voltage and Length Relationship – The relationship between the known voltage and the length of the wire in a potentiometer experiment is direct; as voltage increases, the length to achieve balance also increases.
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