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Physics 9 Online
OpenStudy (anonymous):

how to derive t= p x E, torque for an electric dipole.

OpenStudy (shubhamsrg):

|dw:1374844785711:dw| can you point of direction of p ?

OpenStudy (festinger):

Recall what happens in an electric field. The negative charge will move towards the source of electric field, while the positive charge will move away. |dw:1374849892870:dw| Torque is r x F. Over here you can see that total torque is r x 2qE 2r=d so torque is then qd x E or the usual p x E If you understood what I typed you shouldtry to solve shubhamsg's question.

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