Conservation of Charge and Charging Process Quiz
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Questions and Answers

What is the charge of a proton?

  • Positive charge (correct)
  • Negative charge
  • Neutrons
  • No charge

    • What is the charge of an electron?

  • Negative charge (correct)
  • Positive charge
  • Protons
  • No charge

    • Which particles are carriers of positive charges in an atom?

  • Neutrons
  • Coulombs
  • Electrons
  • Protons (correct)

    • Which particles are carriers of negative charges in an atom?

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

    What is the SI unit for measuring the magnitude of an electric charge?

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

    Which particle is roughly 2000 times lighter than the mass of a proton or neutron?

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

    What happens to the charge on sphere A as the balloon is pulled away?

    <p>Electrons move across the surface until the excess positive charge is uniformly distributed</p> Signup and view all the answers

    According to the Law of Conservation of Charge, what was the overall charge of the system of two spheres before the charging process?

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

    What is the quantity of positive charge on sphere A equal to after induction charging?

    <p>Quantity of negative charge on sphere B</p> Signup and view all the answers

    What is the overall charge of the system of two spheres after the charging process?

    <p>+1000 units</p> Signup and view all the answers

    Which statement correctly describes what happens to charge during an induction charging process?

    <p>Charge is neither created nor destroyed; it is transferred from one object to another</p> Signup and view all the answers

    What does it mean when we say atoms are electrically neutral?

    <p>Atoms have an equal number of protons and electrons</p> Signup and view all the answers

    What is the principle of conservation of charge?

    <p>The total electric charge in a closed system is constant.</p> Signup and view all the answers

    When a plastic rod is rubbed with fur, what type of charge does the rod acquire?

    <p>Negative charge</p> Signup and view all the answers

    What is meant by the quantization of electric charge?

    <p>Observable amounts of electric charge can only be integer multiples of a basic unit.</p> Signup and view all the answers

    In terms of charge, what is a natural unit of charge?

    <p>Integer multiple of proton charge</p> Signup and view all the answers

    How does the total electric charge change when a plastic rod and fur are rubbed together?

    <p>The rod becomes negatively charged and the fur becomes positively charged.</p> Signup and view all the answers

    How many electrons are there in one coulomb of negative charge?

    <p>$6.24 \times 10^{18}$ electrons</p> Signup and view all the answers

    Study Notes

    Charges of Subatomic Particles

    • The charge of a proton is positive.
    • The charge of an electron is negative.

    Charge Carriers in an Atom

    • Protons are carriers of positive charges in an atom.
    • Electrons are carriers of negative charges in an atom.

    Measuring Electric Charge

    • The SI unit for measuring the magnitude of an electric charge is the coulomb (C).

    Mass Comparison

    • An electron is roughly 2000 times lighter than the mass of a proton or neutron.

    Induction Charging

    • When a balloon is pulled away, the charge on sphere A remains the same.
    • According to the Law of Conservation of Charge, the overall charge of the system of two spheres before the charging process is zero.
    • The quantity of positive charge on sphere A after induction charging is equal to the quantity of negative charge on sphere B.
    • The overall charge of the system of two spheres after the charging process remains zero.
    • During an induction charging process, charge is not created or destroyed, but rather transferred from one object to another.

    Electrical Neutrality of Atoms

    • When we say atoms are electrically neutral, it means they have an equal number of protons and electrons.

    Principle of Conservation of Charge

    • The principle of conservation of charge states that the total electric charge of an isolated system remains constant over time.

    Charge Acquired by Rubbing

    • When a plastic rod is rubbed with fur, the rod acquires a negative charge.

    Quantization of Electric Charge

    • The quantization of electric charge means that electric charge comes in discrete, natural units, rather than being continuous.
    • In terms of charge, a natural unit of charge is the charge of a single electron or proton.

    Charge Change During Rubbing

    • The total electric charge does not change when a plastic rod and fur are rubbed together.

    Electric Charge and Electrons

    • There are approximately 6.24 x 10^18 electrons in one coulomb of negative charge.

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    Description

    Test your knowledge on the principle of conservation of charge and the process of charging objects by rubbing them together. Explore how the total electric charge remains constant in a closed system. Prepare to understand the concept of positive and negative charges through practical examples.

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