96年台联大第六题 附上网址 http://www.lib.nthu.edu.tw/library/department/ref/exam/96t/pdf/96A3A4A7.pdf (C) 6. A charge q sits at the back corner of a cube, as shown. The length of the edge of the cube is L and the permittivity constant is ε. What is the flux of electric field E through the shaded surface of the figure? (A) 1 q (B) 1 q (C) 1 q (D) 1 q (E) 1 q ----- ----- ----- ----- ----- 4 ε 6 ε 8 ε 10 ε 12 ε 我知道这题要用高斯来算 Q Φ = --- ε q 1 解答上是写说Φ = (---)(---) ε 8 但是想了老半天终究还是不懂为什麽要乘上1/8阿?? 百思不得其解 恳请大大解惑~~ --

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