But if we separate them from each other they want to reform and start to exert a potential of attraction called a potential difference. When these protons, neutrons and electrons are together within the atom they are happy and stable. Atoms are bound together by powerful forces of attraction existing between the atoms nucleus and the electrons in its outer shell. Neutrons have no electrical charge (that is they are Neutral), while Electrons have a negative electrical charge. Protons, have a positive electrical charge. Basic DC circuit theory looks at how an electric circuit is an interconnection of electrical elements and that electrical current is the flow of charge, measured in amperes (A) being pushed around a closed circuit by a potential difference (electromotive force) known as voltage, measured in volts (V).Īll materials are made up from atoms, and all atoms consist of protons, neutrons and electrons.
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