An electric dipole of dipole moment 1.0 10^ -12 Cm lies along x-axis. An electric field…
Physics · Class 12 · CBSE — Electric Charges and Fields
An electric dipole of dipole moment \(1.0 \times 10^{-12} {Cm}\) lies along x-axis. An electric field of magnitude \(2.0 \times 10^{4} {NC}^{-1}\) is switched on at an instant in the region. The unit vector along the electric field is \(\frac{\sqrt{3}}{2} \hat{{i}}+\frac{1}{2} \hat{{j}}\) . The magnitude of the torque acting on the dipole at that instant is:
- \(0.5 \times 10^{-6} {Nm}\)
- \(1.0 \times 10^{-8} {Nm}\)
- \(2.0 \times 10^{-8} {Nm}\)
- \(4.0 \times 10^{-8} {Nm}\)
Answer
(C) 2.0 10^ -8 Nm
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