Class 12 Physics: Moving Charges and Magnetism Quiz
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Questions and Answers

What is the relationship between the magnetic field and the velocity of a moving charge?

  • The magnetic field is inversely proportional to the velocity of the moving charge
  • The magnetic field is directly proportional to the velocity of the moving charge (correct)
  • The magnetic field is proportional to the square of the velocity of the moving charge
  • The magnetic field is independent of the velocity of the moving charge
  • In which direction does the force act on a positively charged particle moving in a magnetic field?

  • Parallel to the direction of the magnetic field
  • Perpendicular to the direction of the magnetic field (correct)
  • Opposite to the direction of the magnetic field
  • Independent of the direction of the magnetic field
  • What happens to the path of a charged particle when it enters a uniform magnetic field?

  • It moves in a circular path (correct)
  • It continues in a straight line
  • It forms a helical path
  • It spirals outward from the magnetic field
  • A positively charged particle moving in a magnetic field will always experience a force perpendicular to both its velocity and the magnetic field.

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

    The force experienced by a charged particle moving in a magnetic field can be zero.

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

    The magnetic force on a moving charge is independent of the charge's speed.

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

    Study Notes

    Magnetic Field and Moving Charge

    • The magnetic field and the velocity of a moving charge are related, with the force experienced by the charge depending on both factors.

    Force Direction

    • A positively charged particle moving in a magnetic field will experience a force acting in a direction perpendicular to both its velocity and the magnetic field.

    Path of a Charged Particle

    • When a charged particle enters a uniform magnetic field, its path will be affected, with the force exerted by the magnetic field causing the particle to change direction.

    Key Characteristics

    • The force experienced by a charged particle moving in a magnetic field is always perpendicular to both its velocity and the magnetic field.
    • The force experienced by a charged particle moving in a magnetic field can be zero, depending on the orientation of the velocity and magnetic field.
    • The magnetic force on a moving charge is not dependent on the charge's speed.

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    Description

    Test your knowledge on the relationship between magnetic field and the velocity of a moving charge, the direction of force on a positively charged particle in a magnetic field, and the behavior of charged particles in uniform magnetic fields.

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