In a certain region of space the electric field is constant in direction (say horizontally, in the x direction), but its magnitude decreases from E=560 N/C at x=0 to E = 410 N/C at x=30m. Determine the charge within a cubical box of side l = 30m, where the box is oriented so that four of its sides are parallel to the field lines.
The answer to this is -1.2 micro C. I have now idea how they got this answer. Any help is appreciated.
2006-09-04
00:48:16
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1 answers
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asked by
Anonymous
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Physics