늈ȵĽ̰OӋ
һ늈

(1)늺֮gͨ^ʽ|늈lģ늺ɵ܇늈.
(2)|늈ܵ
늈еκΎwܵ늈ãͬһc늺늈вͬc̎ܵ늈ĴСܲһ.
늈ʹеČwao늸БF.
ۮw늈Ƅӕr늈w@ʾ늈.
늈(E)
ٶx늈ijһc늺ܵ늈F늺qıֵԓc늈ȣQ.Eʾ
ʽE=F/q(m늈)
λN/C
ڷԣWҎ늈ijcĈ늺ԓcܵ늈ķͬ.
늈ijһc̎늈EΨһģĴСͷcԓc늺qoPQ늈Դ늺ɼgλã늈ÿһc늈cǷ늺ɟoP.
+Q P r
c늺܇늈늈ȵįB
(1)c늺܇늈
ٴСE=kQ/r2(ֻmc늺ɵ늈)
ڷ늺ɣEķQPBxQ;ؓ늺ɣEķPQBָQ.
(2)늈ȵįBԭijcĈԓc܇늺ɆΪڕrԓcaĈʸ.
Cһ돽Rľw()ⲿa늈cһλĵġ늺ȵc늺ɮa늈ͬc늈ȞE=kQ/r2
ġ늈
(1)늈늈Ǯ늈еһllзÿcоʾԓc늈ȵķ
(2)늈'|
늈ÿcоԓc늈ȵķ.
늈ܷӳ늈ȵĴС().
o늈늈ʼ늺ɻoFhֹؓ늺ɻoFh]Ҳڟo늺̎Дࡣ
ɗl늈ڟo늺ཻ̎()
Nc늺늈ķֲr
塢늈
(1)x늈иcĴСȡͬ늈ͽЄ늈.
(2)늈늈һM̶ܳͬ(g)ƽֱ.磬ɵȴҎN늺ɵƽнٰg늈У߅⣬DŽ늈.Ҋ늈늈
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