# Can a magnetic field do work on a charged particle?

## Can a magnetic field do work on a charged particle?

An electric field may do work on a charged particle, while a magnetic field does no work. The Lorentz force is the combination of the electric and magnetic force, which are often considered together for practical applications.

Under what conditions does a magnetic field do work on a charged particle?

The magnetic force does no work on a charged particle. Therefore a magnetic field cannot be used to increase the energy of a charged particle. If v and B are perpendicular the particle will move in a circular path. (If v also has a component along the direction of B the path will be a helix).

### How does an electric field affect a charged particle?

The electric field will exert a force that accelerates the charged particle. This is the direction that the electric field will cause a positive charge to accelerate. If a positive charge is moving in the same direction as the electric field vector the particle’s velocity will increase.

Which kind of particle when passed through an electric field would be attracted to the negative?

These particles were emitted by the negatively charged cathode and repelled by the negative terminal of an electric field. Because like charges repel each other and opposite charges attract, Thomson concluded that the particles had a net negative charge; we now call these particles electrons.

## Which particle does not affect the charge?

Neutron

Which atomic particle would not be deflected by an electric field?

Alpha particles are positively charged, beta particles are negatively charged, and gamma radiation is electrically neutral . This means that alpha and beta radiation can be deflected by electric fields , but gamma radiation cannot. Remember that opposite charges attract.

### What happens when an electron hits a neutron?

The electron starts as a regular atomic electron, with its wavefunction spreading through the atom and overlapping with the nucleus. In time, the electron reacts with the proton via its overlapping portion, collapses to a point in the nucleus, and disappears as it becomes part of the new neutron.

What happens to an electron in an electric field?

The electric field points in the direction of the force that would be on a positive charge. An electron will move in the opposite direction of the electric field because of its negative charge. Therefore it will move toward the left.

## When can electric field lines cross?

Electric Field lines never cross (since E must point in a definite direction unless it is zero). At any location, the direction of the electric field is tangent to the electric field line that passes through that location.