2025年3月3日 · Fortunately, it is possible to define a quantity, called the electric field, which is independent of the test charge. It only depends on the configuration of the source charges, …

Lorentz force (per unit 3-volume) f on a continuous charge distribution (charge density ρ) in motion. The 3-current density J corresponds to the motion of the charge element dq in volume …

The value of the acceleration can be found by drawing a free-body diagram (one force, F = qE) and applying Newton's second law. This says: qE = ma, so the acceleration is a = qE / m.

In the absence of an electromotive force (e.m.f) provided by a power supply or a changing magnetic field inside the conductor, free charges will flow inside conductors. This happens …

The electric force F exerted by the field on the positive charge is F = qE. To move the charge from plate A to plate B, an equal and opposite force (F′ = −qE) must be applied. The electric …

The direction of the electric field is the direction of that force on a positive charge. The actual force on a particle with charge q is given by F = qE. It points in the opposite direction of the electric …

If the electric field is known, then the electrostatic force on any charge q q is simply obtained by multiplying charge times electric field, or F = qE F = q E. Consider the electric field due to a …