Magnetic Force on Moving Charge
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Questions and Answers

What is the unit of magnetic field?

  • Tesla (correct)
  • Weber
  • Gauss (correct)
  • Ampere

    • Define the force acting on a charged particle moving in a magnetic field?

    The force acting on a charged particle moving in a magnetic field is called the magnetic force. This force, also known as the Lorentz force, is perpendicular to both the direction of the magnetic field and the velocity of the charged particle.

    What is the nature of the magnetic force acting on a charged particle?

    The magnetic force acting on a charged particle is a deflecting force, meaning it does not change the particle's speed but alters its direction of motion.

    How does the magnetic force affect the path of a charged particle?

    <p>The magnetic force causes the charged particle to move in a circular or helical path.</p> Signup and view all the answers

    What is the relationship between the magnetic force and the magnetic field?

    <p>The magnetic force on a charged particle is directly proportional to the strength of the magnetic field.</p> Signup and view all the answers

    A magnetic force acts on a stationary charge.

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

    What is the formula for the magnetic force acting on a moving charge?

    <p>The magnetic force on a moving charge is given by F = qvB sinθ, where q is the magnitude of the charge, v is the velocity of the charge, B is the magnetic field strength, and θ is the angle between the velocity and the magnetic field.</p> Signup and view all the answers

    The magnetic force is a vector quantity.

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

    What is the maximum magnetic force on a charged particle?

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

    What is the direction of the magnetic force if the velocity of the charged particle is parallel to the magnetic field?

    <p>The magnetic force is zero when the velocity is parallel to the magnetic field.</p> Signup and view all the answers

    What is the direction of the magnetic force if the velocity of the charged particle is perpendicular to the magnetic field?

    <p>The magnetic force is maximum and perpendicular to both the velocity and the magnetic field when the velocity is perpendicular to the magnetic field.</p> Signup and view all the answers

    Describe the path of a charged particle moving in a uniform magnetic field when the velocity is perpendicular to the field.

    <p>The charged particle moves in a circular path.</p> Signup and view all the answers

    Describe the path of a charged particle moving in a uniform magnetic field when the velocity is at an angle to the field.

    <p>The charged particle moves in a helical path.</p> Signup and view all the answers

    What is the concept of the magnetic flux?

    <p>Magnetic flux is the measure of the total magnetic field lines passing through a given area.</p> Signup and view all the answers

    What is the relationship between the magnetic flux and the magnetic force?

    <p>The magnetic force is proportional to the rate of change of magnetic flux.</p> Signup and view all the answers

    Study Notes

    Magnetic Force on a Moving Charge in a Uniform Magnetic Field

    • Moving charges create magnetic fields
    • When a charged particle enters a magnetic field, the fields interact
    • Two fields attract on one side of the charge, and repel on the other side
    • This results in a net stronger / weaker field
    • Magnetic force acts on a charged particle from a stronger field to a weaker field
    • The particle deflects perpendicular to both the magnetic field (B) and the velocity (v)
    • A charged particle must be moving to experience a magnetic force
    • There must be a component of velocity perpendicular to the field direction
    • The magnetic force (FB) is proportional to the charge (q), the magnitude of the magnetic field (B), and the component of the velocity (v) perpendicular to the magnetic field
      • FB = qvB sin θ
      • θ is the angle between v and B
    • Maximum force occurs when v and B are perpendicular (θ = 90°)
    • FB = qvB

    Motion of a Charged Particle in a Uniform Magnetic Field

    • If the velocity is perpendicular to the field, the charge moves in a circular path
    • If the velocity is parallel or antiparallel to the field, there is no force acting
    • If the velocity is at an angle other than 0°, 90°, or 180°, the charge moves in a helical path
    • The helical path has components in both the direction of the magnetic field (B) and the velocity (v)

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    Description

    Explore the effects of magnetic fields on moving charges in this quiz. Understand how charged particles interact with magnetic fields and the conditions required for magnetic force to be experienced. Test your knowledge on the equations governing these interactions and the significance of velocity components.

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