A moving particle encounters an external electric field that decreases its kinetic energy from 9020 eV to 7100 eV as the particle moves from position A to position B. The electric potential at A is -49.0 V, and that at B is +22.0 V. Determine the charge of the particle. Include the algebraic sign (+ or -) with your answer. Lower potential Higher potential

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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.