Question

Torque acting on a dipole placed in uniform electric field

Answer 1

Explanation:

Maximum Torque:

When sin theta = 90° or 270°....

Minimum Torque:

When Sin theta= 270° or 180°.

Dipole In Equillibrium:

At 0° and 360° Stable Equillibrium.

At 180° Unstable Equillibrium.

Note:

------- Electric field always tries to align the dipole along its own direction.

------ In unstable equilibrium the net torque may or may not be zero.

And expression attachment in figure.

Thank you.

Answer 2

Explanation:

Torque acting on dipole is

T=pE(sintheta).