The figure below shows a charged particle, with a charge of q = +39.0 nC, that moves a distance of d = 0.197 m from point A to point B in the presence of a uniform electric field E of magnitude 280 N/C, pointing right. A positive point charge q is initially at point A, then moves a distance d to the right to point B. Electric field vector E points to the right.   (a) What is the magnitude (in N) and direction of the electric force on the particle? magnitude                                          N direction ---------------------------                             (b) What is the work (in J) done on the particle by the electric force as it moves from A to B?                                               J (c) What is the change of the electric potential energy (in J) as the particle moves from A to B? (The system consists of the particle and all its surroundings.) PEB − PEA =                       J

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.