Two identical conducting spheres are charged to +2Q and - Q, respectively, and are separated by a distance d as shown. Let Fpefore represent the magnitude of the on the left sphere. The two spheres are made to touch and then are separated again by distance d. Now the magnitude of the force on the left sphere is equal to Fafter- Which of the following is the correct relationship between Fpefore (force before touching) and Fafter (force after touching)? A. 2Fpefore = Fafter +2Q B. Fpefore = Fafter C. Fpefore = 2Fafter D. Fpefore = 4Fafter E. Fpefore = 8Fafter %3D

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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.