gjfelix2001
Junior Member level 2
Hi, the problem is:
Show that if the force action on a dipole p placed in an Non uniform electric field is \[p\cdot \nabla E_{ext}\], the torque acting on the dipole in this field is
\[\tau =r \times [p\cdot\nabla E_{ext}]+p\times E_{ext}\]
where r is the vector distance to the dipole from the point about which the torque is to be measured.
How can i do this??? it's urgent.. please!!![/b]
Show that if the force action on a dipole p placed in an Non uniform electric field is \[p\cdot \nabla E_{ext}\], the torque acting on the dipole in this field is
\[\tau =r \times [p\cdot\nabla E_{ext}]+p\times E_{ext}\]
where r is the vector distance to the dipole from the point about which the torque is to be measured.
How can i do this??? it's urgent.. please!!![/b]