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A rectangular plate of uniform surface charge density σ and dimensions A across, and B long, as shown. Say that the position P1 is (0, 0, h) with h>0, and that position P2 is (0, w, 0) with w>0.

A rectangular plate of uniform surface charge density σ and dimensions A across, and B long, as shown. Say that the position P1 is (0, 0, h) with h>0, and that position P2 is (0, w, 0) with w>0.

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A rectangular plate of uniform surface charge density σ and dimensions A across, and B long, as shown.
Say that the position P 1 is ( 0 , 0 , h ) with h > 0 , and that position P 2 is ( 0 , w , 0 ) with w > 0 .

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