Week 3 Electricity - Electricity Electricity and Magnetism...

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Electricity Electricity and Magnetism | Conclusion | Practice Quiz Please note , all words that are bold are rollovers that will display additional text in the form of a pop-up box. Electricity The basic unit of matter is the atom, which is made up of protons , electrons , and neutrons . Positively and negatively charged particles cna interact; like charges repel and unlike charges attract . An electrostatic charge , or static electrical charge , results from a surplus or deficiency of electrons as shown in the following figure. A flow of electric charge is called an electric current (I) . Current (I) is measured as the rate of flow of charge, the quantity of charge (q) through a conductor in a period of time (t) . The unit of current in coulomb/second is called an ampere , or amp for short (A). An electric circuit is device that does work by moving charges through wires from one point in the circuit to another. The work required to move the charge is defeined as voltage . A volt (V) is the ratio of work to charge moved, V = W/q . The ratio of volts/amps in a circuit is the
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