What is the direction of the electric force on a proton placed at point b, if the magnetic field directed into the page increases with time

Motion of a Charged Particle in a Magnetic Field Electric vs. Magnetic Forces Electric and magnetic forces both affect the trajectory of charged particles, but in qualitatively different ways. LEARNING OBJECTIVES Compare the effects of the electric and the magnetic fields on the charged particle KEY TAKEAWAYS Key Points * 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. * In contrast, the magnetic force on a charge particle is orthogonal to the magnetic field vector, and depends on the velocity of the particle. The right hand rule can be used to determine the direction of the force.

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