Question

torque on electric dipole placed ​

Answer 1

Explanation:

When an electric dipole moment is kept in an electric field, force acts on both charges in a dipole. The force acting on the charges acts as a couple and the dipole experiences a torque. The torque is maximum when it makes 90o with the electric field, which is the most unstable position.

Answer 2

$\sf{\underline\blue{Answer:-}}$

Before we understand the properties of the torque acting on an electric dipole in a uniform electric field, let us brush up our understanding of torque and electric dipole clearly.

Torque:

The measure of force that causes an object to rotate about an axis is known as torque. Torque is a vector quantity and its direction depends on the direction of the force on the axis. The magnitude of the torque vector is calculated as follows:

τ=FrsinΘ

where r is the length of the moment arm, and θ is the angle between the moment arm and the force vector.

Electric dipole:

A pair of electric charges with an equal magnitude but opposite charges separated by a distance d is known as an electric dipole. The electric dipole moment for this is defined as the product of the magnitude of these charges and the distance between them. The electric dipole moment is a vector having a defined direction from the negative charge to the positive charge.