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What is the value of the angle between t...

What is the value of the angle between the vectors `vecPandvecE` for which the potential energy of an electric dipole of dipole moment p, kept in an external electric field `vecE` , has the maximum value.

Text Solution

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`P.E.=-vecp.vecE=-pEcostheta`
`thereforeP.E` is the maximum when `costheta=-1,i.ethetapi(180^(@))`
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