Question

A sample of HCl gas is placed in an electric field of $2.5\times {10}^{4}N{C}^{-1}$. The dipole moment of each HCl molecule is $3.4\times {10}^{-30}$Cm. Find the maximum torque that can act on a molecule.

Answer 1

Given data:

$E=2.5\times {10}^{4}N{C}^{-1},p=3.4\times {10}^{-30}$Cm.

Solution:

Torque acting on the molecule.

$\tau =pE\sin \theta$ for maximum torque, $\theta ={90}^o$

$=3.4\times {10}^{-30}\times 2.5\times {10}^4$

Maximum Torque acting on the molecules is $=8.5\times {10}^{-26}$Nm.