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Unformatted text preview: B. It is possible for an object to pick up an extra positive or negative charge. The object will have the either a positive or negative charge depending on the extra charges C. Charges are measured in units of Coulomb (C) 1. A Coulomb is the amount of charge flow through the cross section of a wire in 1 second when there is a current of 1 ampere ( Amperes will be discussed in a later chapter) 2. The amount of charge carried by an electron is 1.6x 10 19 C A. Electrons move differently in different materials 1. Insulators- electrons move slowly Ex. Wood plastic 2. Conductors- electrons move quickly Ex. Metals 3. Semiconductors- intermediate electron motion can be manipulated A. Coulomb’s law 1. Like charges repel 2. Opposite charges attract...
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