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Spectral_Agony 2013-4-8 11:00 PM

Electrostatic Questions

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Thanks:smile_40:

↗亢龍無悔↙ 2013-4-9 12:05 AM

Q1, recall definition of electric potential, work done to move a unit positive charge from infinity to that point, and adding them together, you will get the answer

Q2, energy = 0.5 CV*2 = Q*2 / 2C.  And Q= CV
Q3, I will think of that when I have time

[[i] 本帖最後由 ↗亢龍無悔↙ 於 2013-4-9 12:13 AM 編輯 [/i]]

Spectral_Agony 2013-4-9 04:49 PM

回覆 2# 的帖子

Q1 and Q2 done.
Q3 still cannot get the correct answer...
   0.5(2.02*10^-9)(100)(100)
   0.5(5)(2.02*10^-9)(100)(100)
2個都唔correct...
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查看完整版本: Electrostatic Questions