You pull your t-shirt out of the washing machine and note that 1493 particles have become attached, each of which could be either an electron or a proton. Your t-shirt has a net charge of −3.12  10-17 C. (a) How many electrons are attached to your t-shirt? (b) What is the mass of the particles attached to your t-shirt?

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Q: What is remanent magnetism? How can it be used to track the movement of continents over time?

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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.