3. In a uniform electric field near the surface of the Earth, a particle having a charge of -2.0 x 10-9 C is acted on by a downward electric force of 3.0 x 10-6 N. (a) Find the magnitude of the electric field. (b) What are the magnitude and direction of the force force exerted on a proton located in this field? (c) What is the ratio of the force electricity to the gravitational force in this case?

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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.