A metal sphere hangs from a string and has 2 kg of mass. The sphere has a charge of +5.3 µC. A uniform electric field is turned on and directed to the right. (a) What is the electric force on the metal sphere if the magnitude of the electric field is 106 N/C? N (c) When the sphere reaches equilibrium, what is the angle that the string makes with the vertical axis (assuming the same electric field as part (b))? °

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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.