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In a potentiometer experiment, if the wire is made of a material with higher res

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Question: In a potentiometer experiment, if the wire is made of a material with higher resistivity, what will be the effect on the potential gradient?

Options:

  1. It will increase
  2. It will decrease
  3. It will remain the same
  4. It will become zero

Correct Answer: It will decrease

Solution: 

If the wire is made of a material with higher resistivity, the potential gradient will decrease because the resistance increases, leading to a lower current for the same voltage.

In a potentiometer experiment, if the wire is made of a material with higher res

Practice Questions

Q1
In a potentiometer experiment, if the wire is made of a material with higher resistivity, what will be the effect on the potential gradient?
  1. It will increase
  2. It will decrease
  3. It will remain the same
  4. It will become zero

Questions & Step-by-Step Solutions

In a potentiometer experiment, if the wire is made of a material with higher resistivity, what will be the effect on the potential gradient?
Correct Answer: Potential gradient will decrease.
  • Step 1: Understand what resistivity means. Resistivity is a property of a material that affects how easily electricity can flow through it.
  • Step 2: Know that a wire with higher resistivity means it has more resistance to the flow of electricity.
  • Step 3: Remember that in a potentiometer, the potential gradient is the change in voltage per unit length of the wire.
  • Step 4: Realize that if the wire has higher resistance, it will allow less current to flow for the same applied voltage.
  • Step 5: Understand that a lower current means that the voltage drop across the wire will be less for the same length of wire.
  • Step 6: Conclude that since the voltage drop is less, the potential gradient (voltage drop per unit length) will decrease.
  • Potential Gradient – The potential gradient in a potentiometer is defined as the change in potential per unit length of the wire, which is influenced by the wire's resistance and the current flowing through it.
  • Resistivity – Resistivity is a material property that quantifies how strongly a given material opposes the flow of electric current, affecting the overall resistance of the wire.
  • Ohm's Law – Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance.
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