Resistance/Circuits MCQ 3
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Questions and Answers

What is the primary factor that determines the amount of heat produced in a conductor?

  • The resistance of the conductor
  • The power consumed by the conductor
  • The voltage across the conductor
  • The current flowing through the conductor (correct)

    • In a series circuit, what property remains constant at every point along the wire?

  • Power
  • Heat
  • Resistance
  • Current (correct)

    • What type of electrical device converts electrical potential energy to another form, such as heat?

  • Resistor (correct)
  • Capacitor
  • Transformer
  • Conductor

    • What happens to the size of the current at the junction entering and exiting the parallel parts of a circuit?

    <p>It remains the same</p> Signup and view all the answers

    What is the SI unit for measuring resistance?

    <p>Ohm</p> Signup and view all the answers

    Which of the following statements is true regarding higher voltage power lines?

    <p>They have a smaller current</p> Signup and view all the answers

    What is the formula for calculating the total resistance of resistors in series?

    <p>RT = R1 + R2</p> Signup and view all the answers

    What is the formula for calculating the total resistance of resistors in parallel?

    <p>1/RT = 1/R1 + 1/R2</p> Signup and view all the answers

    What is the unit of measurement for resistivity?

    <p>ohm metre</p> Signup and view all the answers

    What is the formula for calculating the potential difference of a full circuit?

    <p>V = V1 + V2</p> Signup and view all the answers

    What is the formula for calculating the current entering and leaving a point in a parallel circuit?

    <p>I = I1 + I2</p> Signup and view all the answers

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