Question

A Combination of two charges +1 nC and -1 nC are separated by a distance of 1 μm. This Constituted electric dipole is placed in an electric field of 1000 V/m at an angle of 45 degree. The torque and the potential energy on the electric dipole are:

• A. $\frac{1}{\sqrt{2}}$ x10-12 N.m and $\frac{1}{\sqrt{2}}$ x10-12 J
• B. $\frac{1}{\sqrt{2}}$ x10-12 N.m and $\sqrt{2}$ x10-12 J
• C. $\sqrt{2}$ x10-12 N.m and $\frac{1}{\sqrt{2}}$ x10-12 J
• D. $\sqrt{2}$ x10-12 N.m and $\sqrt{2}$ x10-12 J
• E. $\frac{\sqrt{3}}{2}$ x10-12 N.m and $\frac{\sqrt{3}}{2}$x10-12 J

Answer 1

Answer: (A)

$\frac{1}{\sqrt{2}}$ x10-12 N.m and $\frac{1}{\sqrt{2}}$ x10-12 J

Answer 2

The correct answer is (A): $\frac{1}{\sqrt{2}}$ x10-12 N.m and $\frac{1}{\sqrt{2}}$ x10-12 J