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Ankit Kumar
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Joined: 1 May 2011
Posts: 2
1 May 2011 15:23:08 IST
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in w=-PE Cos theta,w is work done by external agent hai ya eorkdone by field
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1 May 2011 16:15:36 IST
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As we assume arbitrarily (convention) the zero potential energy when the dipolemoment (p) is perpendicular to the electric field (E),
that is when theta = 900 the potential energy is taken to be zero.
Hence

(w) is the work done by the External Electric field
17 May 2011 21:34:36 IST
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i like it...
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