What is potential energy of a dipole in an external field?

The potential energy of a dipole in an external field τ = p × E. This work is saved as the system’s potential energy. The potential energy U(θ) can then be linked to the dipole’s inclination θ.

What is the potential energy of a dipole in uniform electric field?

Let us consider an electric dipole of the dipole moment →P in a uniform electric field →E with →P making an angle θ with →E. , since the dipole axis is perpendicular to the field so potential energy is equivalent to zero.

Why is the potential energy of a dipole negative?

The state where the dipole is pointing in the same direction as the electric is lower than that where the two vectors are anti-parallel, so you want the θ=0∘ state to be lower than the θ=180∘ state. So you insert the negative sign to enforce that.

When potential energy of dipole is maximum?

When the angle between the dipole moment and electric field is 180° then the potential energy of electric dipole is maximum.

What is the potential energy of dipole when it is perpendicular to magnetic field?

What is the potential energy of a dipole when it is perpendicular to a magnetic field? P. E. =-MBcosθ=-MBcos90∘=zero.

What is the potential energy of a dipole of moment p which is perpendicular to an uniform electric field E?

The potential energy is -P*E*cos(theta) where P is the dipole moment, E is the electric field and theta is the angle dipole makes with the field. Also in this case we take theta=90° as a point of zero potential energy(reference).

In which state potential energy is maximum?

So maximum potential energy will be when the two objects are placed at infinite distance from each other. Hence, its maximum value is zero at infinity.

What do you mean by potential energy of a magnet?

Magnetic potential energy is the form of energy related not only to the distance between magnetic materials, but also to the orientation, or alignment, of those materials within the field.

What do you mean by potential energy of a magnet derive an expression for it?

Answer: The formula for the energy stored in a magnetic field is E = 1/2 LI2. The energy stored in a magnetic field is equal to the work needed to produce a current through the inductor. Energy is stored in a magnetic field. Energy density can be written as uB=B22μ u B = B 2 2 μ .