Electric charge is conserved in interactions from "summary" of Physics 11 by British Columbia. Schools Department. Curriculum Development Branch
When studying interactions between charged objects, it is important to understand the principle of conservation of electric charge. This principle states that the total electric charge in an isolated system remains constant over time. In other words, electric charge cannot be created or destroyed in interactions, it can only be transferred from one object to another. When two objects interact, such as through contact or induction, the total electric charge of the system must remain the same before and after the interaction. This means that if one object gains a positive charge, another object must gain an equal amount of negative charge to balance the system. This ensures that the overall charge of the system is conserved. For example, when a neutral object comes into contact with a positively charged object, electrons from the neutral object will transfer to the positively charged object. This transfer of electrons results in the neutral object becoming positively charged as well, ensuring that the total charge of the system remains constant. Similarly, when two objects are separated after being in contact, the total charge of the system must remain the same. If one object gains a positive charge, the other object must gain an equal negative charge to balance the system. This transfer of charge maintains the conservation of electric charge in the system. Understanding the conservation of electric charge is crucial in explaining various phenomena in physics, such as the behavior of charged particles in electric circuits, the interactions between charged objects, and the creation of electric fields. By applying this principle, scientists and researchers can accurately predict and analyze the behavior of charged objects in different scenarios.
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