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charging by sharing
發問:
when two object touch each other(兩个都是conductor,但其中一個是uncharged conductor and have insulators support) Q(1)我想問electrons在咩情况下停止再过去另一個object Q(2)怎樣能平均分配電子 Q(3)what is electronegativity?
最佳解答:
Q: 我想問electrons在咩情况下停止再过去另一個object I suppose one conductor is charged and the other is uncharged. Because there is a potential difference between the two conductors, when they touch each other, free electrons will flow from the one at a low potential to the one at a higher potential. As a result of such electron flow, the potentials of the two conductors will alter. The conductor that gains in electrons will have its potential lowered, whereas the one that loses electrons will have its potential raised. Hence, the difference in potential between the conductos will gradually decrease. The flow of electrons stops when there is no longer any potential difference between the two consuctors. Q:怎樣能平均分配電子 If the two conductors are identical, i.e. of the same size, shape and geometry, then the free electrons will be distributed evenly on the two conductors after they are in touch with each other. Q:what is electronegativity? This term is, in fact, chemical term more than a term in physics. Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons towards itself and thus the tendency to form negative ions. An atom's electronegativity is affected by both its atomic number and the distance that its valence electrons reside from the charged nucleus. The higher the associated electronegativity number, the more an element or compound attracts electrons towards it. More information on electronegativity can be found on the following web-page: http://en.wikipedia.org/wiki/Electronegativity
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