Why is the path of a charged particle circular if it enters perpendicularly in the uniform magnetic field?

Why is the path of a charged particle circular if it enters perpendicularly in the uniform 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 magnetic force is perpendicular to the velocity, so velocity changes in direction but not magnitude. The result is uniform circular motion.

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

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. The kinetic energy of a charged particle moving in a uniform magnetic field remains unchanged.

Why is the path of a charged particle in a circle when its velocity is not perpendicular to the magnetic field?

If a charged particle moves in a region of a uniform magnetic field such that its velocity is not perpendicular to the magnetic field, then the velocity of the particle is split up into two components. Hence the path of the particle is not a circle; it is helical around the field lines.

How can the motion of a charged particle be used to distinguish?

The motion of a charged particle can be used to distinguish between a magnetic field and electric field in a certain region by firing the charge.

When a charged particle passes through an electric field which among the following properties change?

If a positive charge is moving in the same direction as the electric field vector the particle’s velocity will increase. If it is moving in the opposite direction it will decelerate. If a negative charge is moving in the same direction as the electric field vector the particle will decelerate.

When a charged particle enters a region of uniform magnetic field it follows a circular path?

When a charge particle enters a region of uniform magnetic field with its velocity perpendicular to the field, it experiences a magnetic force which acts as centripetal force to cause circular motion of the particle.

When a charged particle enters in a magnetic field what changes take place in its kinetic energy?

The magnetic field does no work, so the kinetic energy and speed of a charged particle in a magnetic field remain constant. The magnetic force, acting perpendicular to the velocity of the particle, will cause circular motion.

What must the initial state of motion of a charged particle be if it will follow a helical path in a magnetic field?

28.6. 3. What must the initial state of motion of a charged particle be if it will follow a helical path in a magnetic field? a) It must be moving at an angle that is neither parallel to nor perpendicular to the magnetic field.

How can the motion of a charged particle be used to distinguish between an electric field and magnetic field?

What is circular motion of a charged particle in a magnetic field?

Circular Motion of a Charged particle in a Magnetic Field. In other words, it is the radius of the circular motion of a charged particle in the presence of a uniform magnetic field. If the velocity is not perpendicular to the magnetic field, then v is the component of the velocity perpendicular to the field.

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.

Can the velocity of a particle change in a magnetic field?

Here we say that no work is done by the magnetic force on the particle and hence, no change in the velocity of the particle can be seen. Mathematically, when the velocity of the particle v is perpendicular to the direction of the magnetic field, we can write,

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.