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Electrostatics - Electric dipole

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For two equal in magnitude but opposite charges +Q and -Q we can define a vector of dipole moment p, with the magnitude absolute value (p)=dxQ, where d is the distance between the charges. The direction of p is the direction from negative to positve charge (see figure)

1.)What force acts on the dipole in a uniform electric field E.

2.)What torque is acting on the dipole.

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+Q F

p d dsinθ E
θ
...

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