VoltageCurrentCapacitance MCQ 1
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Questions and Answers

What is the SI unit of potential difference?

  • Volt (V) (correct)
  • Ampere (A)
  • Joule (J)
  • Ohm (Ω)

    • What device is used to measure voltage?

  • Galvanometer
  • Multimeter
  • Voltmeter (correct)
  • Ammeter

    • In which configuration is a voltmeter connected to measure the potential difference across a component?

  • Parallel (correct)
  • Feedback
  • Series
  • Cross

    • What is the source of emf in a thermocouple?

    <p>Heat difference at junctions of different metals</p> Signup and view all the answers

    What is the SI unit of capacitance?

    <p>Farad (F)</p> Signup and view all the answers

    Which device converts chemical, mechanical, or other forms of energy into electrical energy?

    <p>Primary cell</p> Signup and view all the answers

    What is the formula for capacitance of a conductor?

    <p>C = Q/V</p> Signup and view all the answers

    What type of current can capacitors conduct?

    <p>AC only</p> Signup and view all the answers

    What is the SI unit of electric current?

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

    What is the energy stored in a capacitor related to?

    <p>$1/2 CV^2$</p> Signup and view all the answers

    Which law states that the rate of heat production in a circuit is proportional to resistance and the square of the current?

    <p>Joule's Law</p> Signup and view all the answers

    What are RCDs used for in electrical circuits?

    <p>To cut off current quickly in case of a fault</p> Signup and view all the answers

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