## What does a charged particle do 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.

**What is the direction when a charged particle moves through a magnetic field?**

When a charged particle enters a magnetic field at a direction perpendicular to the direction of motion, the path of the motion is circular. In circular motion the direction of velocity changes at every point (the magnitude remains constant). Therefore, the tangential momentum will change at every point.

**How do you tell if a particle in a magnetic field is positive or negative?**

If you hold out your thumb as if you’re hitch-hiking, your thumb will point in the direction of the force. At least, your thumb points in the direction of the force as long as the charge is positive. A negative charge introduces a negative sign, which flips the direction of the force.

### Does magnetic field affect charged particle?

Right Hand Rule: Magnetic fields exert forces on moving charges. The angle dependence of the magnetic field also causes charged particles to move perpendicular to the magnetic field lines in a circular or helical fashion, while a particle in an electric field will move in a straight line along an electric field line.

**Can a charged particle be accelerated by a magnetic field?**

Velocity, magnetic field and force are perpendicular to each other. So it can change the direction of the velocity of a charged particle. So our answer is Yes, a charged particle can be accelerated by a magnetic filed but its speed can’t be increase.

**Can a magnetic field accelerate a charged particle?**

Charged particles can not be accelerated by the magnetic field. The accelerate = to change the speed = to change (to increase) the energy. But change the energy of a charged particle one can only by electric field.

#### Can a charged particle be accelerated by magnetic field?

Yes, a charged particle can be accelerated by a magnetic field. A magnetic field exerts force on the charged particle, which is perpendicular to both the magnetic field and velocity.

**Does a charged particle at rest create an electric field?**

If you have a solenoid with a uniform time-varying magnetic field, then an electric field is induced by Faraday’s law. It will be a circular field, and will make an electron at rest spiral. So the electron at rest is affected by a time-varying magnetic field, though indirectly–via an induced electric field.

**Is Earth’s magnetic field negative or positive?**

On Earth, the north (positive) pole of the Earth’s magnet is in fact at its South geographic pole. A compass needle sure enough indicates North, but if you put a compass needle near a bar magnet, it points AWAY from the north (positive) pole of the bar magnet.

## How does the force on a charged particle?

The force on a charged particle due to an electric field is directed parallel to the electric field vector in the case of a positive charge, and anti-parallel in the case of a negative charge. It does not depend on the velocity of the particle.

**What is the electric field around a charged particle like?**

The electric field is a vector field around a charged particle. It represents the force that other charged particles would feel if placed near the particle creating the electric field. Given a point charge, or a particle of infinitesimal size, that contains a certain charge, electric field lines emanate from equally in all radial directions.

**How does a charged particle produce an electromagnetic wave?**

Any charged particle can generate an electromagnetic wave. All it has to do is accelerate or decelerate. Using electrons to generate electromagnetic waves is really standard procedure. Electrons are the mobile charge carriers in metals, so shaking them around in an antenna is the most common way to generate electromagnetic waves.

### What is the path of a particle 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.