Understanding Electric Potential
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Questions and Answers

How is the zero of potential defined in cases where an actual level of potential is required?

  • As the highest point in the circuit
  • As the lowest point in the circuit
  • As Earth's surface (correct)
  • As the point with the most charge

    • What is the significance of potential difference in electric circuits?

  • It determines the actual potential at a point
  • It indicates the amount of charge at a point
  • It measures the resistance to current flow
  • It represents the work required to move charge between two points (correct)

    • How is potential difference related to electrical pressure?

  • Potential difference causes electrical pressure
  • Potential difference is directly proportional to electrical pressure (correct)
  • Potential difference and electrical pressure are unrelated
  • Potential difference is inversely proportional to electrical pressure

    • What condition must exist in a circuit for current to flow?

    <p>Non-negligible opposition to current flow</p> Signup and view all the answers

    When does a potential difference exist across a component in a circuit?

    <p>When pushing electrons through the device requires work</p> Signup and view all the answers

    What is the significance of potential difference in electric circuits?

    <p>It is the force driving the flow of current through the circuit</p> Signup and view all the answers

    How is potential difference related to electrical pressure?

    <p>Potential difference is the cause of electrical pressure</p> Signup and view all the answers

    When does a potential difference exist across a component in a circuit?

    <p>When there is opposition to current flow in the component</p> Signup and view all the answers

    What must exist in a circuit for current to flow?

    <p>Different potential at each point in the circuit</p> Signup and view all the answers

    How is the zero of potential defined in cases where an actual level of potential is required?

    <p>The zero of potential is always taken as Earth</p> Signup and view all the answers

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