Electric Power, Energy, and Circuits Quiz
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Questions and Answers

What is the resistance of the electric iron when connected to a 250 V supply?

  • 220 Ω
  • 62.5 Ω (correct)
  • 48 Ω
  • 100 Ω

    • What is the current taken by the electric iron when connected to a 220 V supply?

  • 5.33 A
  • 4.18 A
  • 3.52 A (correct)
  • 2.91 A

    • In a series circuit, if the voltage drop across the first resistor is 5 V and the voltage drop across the third resistor is 7 V, what is the total voltage of the circuit?

  • 22 V (correct)
  • 24 V
  • 12 V
  • 19 V

    • What is the value of the first resistor in a series circuit if the current through it is 2 A and the voltage drop across it is 6 V?

    <p>4 Ω</p> Signup and view all the answers

    If a parallel circuit has three branches, how many current paths are there?

    <p>3</p> Signup and view all the answers

    What is true about the voltage across each resistance in a parallel combination?

    <p>The same for each resistance</p> Signup and view all the answers

    In a parallel circuit, what does Ohm's law describe?

    <p>Relationship between current and voltage in each branch</p> Signup and view all the answers

    If two resistors are connected in parallel and one has twice the resistance of the other, how does their current compare?

    <p>Lower for the lower resistance resistor</p> Signup and view all the answers

    What happens to the total resistance in a parallel circuit when more resistors are added?

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

    What is true about the current paths in a parallel circuit?

    <p>The same for all branches</p> Signup and view all the answers

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