Which of the following fields could bring a deflection in an electron beam?

An electron is a negatively charged subatomic particle. When it passes through an electric field, it experiences a force (F = qE) that causes it to accelerate in the direction opposite to the field lines (towards the positive potential), resulting in deflection. When a moving electron beam enters a magnetic field, it experiences the Lorentz force (F = q(v × B)). This force acts perpendicular to both the velocity (v) of the electron and the magnetic field (B), causing the beam to move in a curved or circular path. Since both fields exert a force on moving charges, either an electric field, a magnetic field, or a combination of both can bring about a deflection in an electron beam.