What happens when a charge enters a uniform magnetic field?

A charged particle experiences a force when moving through a magnetic field. Since the magnetic force is perpendicular to the direction of travel, a charged particle follows a curved path in a magnetic field. The particle continues to follow this curved path until it forms a complete circle.

Does momentum change in uniform magnetic field?

(D) Kinetic energy charges but the momentum does not change. …

When a charged body enters a uniform magnetic field how will its kinetic energy change?

When a charged particle enters a uniform magnetic field, its kinetic energy remains constant. Force is perpendicular to the velocity, so the work done by magnetic field is Zero. This does not cause any change in kinetic energy.

When a charged particle enters a magnetic field what is its kinetic energy?

When a charged particle enters, parallel to the uniform magnetic field, it is not acted by any force, that is, it is not accelerated. Thus, its speed remains constant, and so does its kinetic energy.

When a charged particle enters a uniform magnetic field then which of the following parts are possible?

When a charged particle enters a uniform magnetic field, then according to Fleming’s left hand rule, in a magnetic field the force is always at right angles to the motion of the electron and so the particle will undergo circular motion.

What happens to a proton in a uniform magnetic field?

At a given instant, an electron and a proton are moving with the same velocity in a constant magnetic field. Compare the magnetic forces on these particles. Compare their accelerations. The magnitude of the proton and electron magnetic forces are the same since they have the same amount of charge.

What happens when a charged particle enters a uniform magnetic field?

A charged particle enters a uniform magnetic field perpendicular to the direction of magnetic field. How will its kinetic energy and momentum change? KE Increases momentum decreases. KE decreases momentum increases. As the charged particle enters perpendicular to the magnetic field, the force will act perpendicular to the velocity.

Why does a magnetic field always exert a force perpendicular to velocity?

The magnetic field always exerts a force perpendicular to the particle’s velocity, so the magnitude of the velocity remains constant and so does the kinetic energy. (It would be right to be skeptical about whether this argument also applies when relativity is taken into account.

What happens when a charged particle travels in a helical path?

While the charged particle travels in a helical path, it may enter a region where the magnetic field is not uniform. In particular, suppose a particle travels from a region of strong magnetic field to a region of weaker field, then back to a region of stronger field. The particle may reflect back before entering the stronger magnetic field region.

What determines the direction of motion in a magnetic field?

If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of travel, a charged particle follows a curved path in a magnetic field. The particle continues to follow this curved path until it forms a complete circle.