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Question

28. Charge of +2 nC is separated from a charge of - 2 nC by 1.5 cm forming an electric dipole. What torwue acts on the dipole when its dipole moment vector makes an angle of 30 degree in the clockwise sense with the field of magnitude 5000 N/C?

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Solution

Dear student
Torque on the dipole is T=p×E×sinθp=q×Ep=2×10-9×5×103=10×10-6 C×mT=p×E×sin150°T=10×106×sin150°T=10×10-6×12=5×10-6N×CRegards

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