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What is the effect of increasing the diameter of the potentiometer wire on its r

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Question: What is the effect of increasing the diameter of the potentiometer wire on its resistance?

Options:

  1. Resistance increases
  2. Resistance decreases
  3. Resistance remains the same
  4. Resistance becomes zero

Correct Answer: Resistance decreases

Solution: 

Increasing the diameter of the potentiometer wire decreases its resistance, as resistance is inversely proportional to the cross-sectional area of the wire.

What is the effect of increasing the diameter of the potentiometer wire on its r

Practice Questions

Q1
What is the effect of increasing the diameter of the potentiometer wire on its resistance?
  1. Resistance increases
  2. Resistance decreases
  3. Resistance remains the same
  4. Resistance becomes zero

Questions & Step-by-Step Solutions

What is the effect of increasing the diameter of the potentiometer wire on its resistance?
Correct Answer: Resistance decreases.
  • Step 1: Understand what a potentiometer wire is. It is a type of resistor used to measure voltage or current.
  • Step 2: Know that resistance is a measure of how much a material opposes the flow of electric current.
  • Step 3: Learn about the diameter of the wire. A larger diameter means a thicker wire.
  • Step 4: Recognize that the cross-sectional area of the wire increases when the diameter increases.
  • Step 5: Remember the relationship between resistance and cross-sectional area: resistance decreases as the area increases.
  • Step 6: Conclude that increasing the diameter of the potentiometer wire decreases its resistance.
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