Electrostatics Question 705

Question: If the dipole of moment 2.57×1017cm is placed into an electric field of magnitude 3.0×104N/C such that the fields lines are aligned at 30 with the line joining P to the dipole, what torque acts on the dipole?

Options:

A) 7.7×1013Nm

B) 3.855×1013Nm

C) 3.855×1015Nm

D) 7.7×1015Nm

Show Answer

Answer:

Correct Answer: B

Solution:

[b] τ=(2.57×1017Cm)(3.0×104NC)(12)

=3.855×1013Nm.



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