作者aacvbn ( 姿势+)
看板Grad-ProbAsk
标题[理工] [电磁]-电场
时间Mon Dec 28 23:49:17 2009
1.
A conical surface (an empty ice-cream cone) carries a uniform
surface charge σ. The height of the cone is h, as is the
radius of the top. Find the potential difference between point a
(the vertex) and b (the center of the top).
2.
Three point charge q,-2q and q are located at z=-d,0 and d , respectively,
on the z-axis in the free space. Derive the electrostatic potential
2
distribution for the far field in the limits d→0,q→∞ such that qd →Q .
感谢高手
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