Physics Chapter: Electricity and Circuits
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Questions and Answers

What happens to the hair when it is combed?

  • It gains electrons and becomes negatively charged.
  • It gains protons and becomes positively charged.
  • It loses electrons and becomes positively charged. (correct)
  • It retains its charge without any change.

    • Which of the following materials is categorized as a strong conductor of electricity?

  • Glass
  • Plastic
  • Cotton (correct)
  • Copper

    • According to the law of electric charges, what occurs between two like charges?

  • They remain unaffected.
  • They repel each other. (correct)
  • They attract each other.
  • They neutralize each other.

    • What is true about insulators in the context of electricity?

    <p>They restrict the movement of electrons.</p> Signup and view all the answers

    What is a characteristic of electrically charged objects attracting neutral objects?

    <p>Attraction occurs due to opposite charges.</p> Signup and view all the answers

    What unit is used to measure electrical current?

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

    What type of cell can be recharged?

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

    In a series circuit, how does the total current behave?

    <p>It is the same at every point in the circuit.</p> Signup and view all the answers

    What measures potential difference in a circuit?

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

    How is total resistance calculated in a parallel circuit?

    <p>1/R = 1/R₁ + 1/R₂ + 1/R₃</p> Signup and view all the answers

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