When electric dipole is aligns parallel to the field then torque on a dipole becomes?

as the dipole is parallel to the field these forces act along the dipole length. As the forces are collinear the Torque will be zero.

When electric dipole is placed parallel to the electric field then torque?

If the dipole moment p is parallel or antiparallel to the external field E, the net torque is zero but there is a non-uniform force on the dipole E.

What happens when electric dipole is parallel to electric field?

Once the dipole comes parallel to the electric field vector a force will act on the dipole in the direction of increasing field. … Maximum torque acts on a dipole when the angle between P and E is maximum i.e. θ=90∘and its minimum when θ=0∘ in a uniform electric field. Note: Option C.

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When the dipole is aligned itself parallel to the uniform electric field then the torque on the dipole is?

(i) Parallel to the field: The net force and torque on the dipole is zero. Hence, dipole will not move.

When the torque on an electric dipole placed in a uniform electric field is?

Show that the torque on an electric dipole placed in a uniform electric field is →τ=→P×→E. Hint: Here, we will proceed by writing down the forces experienced by the charges in the electric dipole placed in a uniform electric field.

What would happen if the external field E is increasing parallel to P and anti-parallel to P?

If the external field E is increasing, the dipole moment P will have a net force acting towards the increasing field and when E is kept anti-parallel, the net dipole moment will have a force over the decreasing field. Explanation: When the electric field is not uniform, the net dipole moment will be zero.

Is placed in a uniform electric field?

An electric dipole placed in uniform electric field experiences a torque which align the dipole parallel to the direction of the electric field with zero net force.

When an electric dipole is held at an angle in a uniform electric field?

1) the forces experienced by the 2 charges constituting the electric dipole when placed in an uniform external electric field are equal and opposite in nature, the net force on the dipole is zero. No torque act on the dipole when the moment of electric dipole is parallel to the electric field.

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What does an electric dipole experience?

An electric dipole always experiences a torque when placed in uniform as well as non-uniform electric field. But in non-uniform electric field, dipole will also experience net force of attraction. So the electric dipole in non-uniform electric field experiences both torque and force.

What happens when an electric dipole is kept in non uniform electric field?

If an electric dipole is placed in a nonuniform electric field, then the positive and the negative charges of the dipole will experience a net force. And as one end of the dipole is experiencing a force in one direction and the other end in the opposite direction, so the dipole will have a net torque also.

What is the effect of torque on a dipole in an electric field?

Answer: Even though the two forces on the ends of the dipole cancel as free vectors, they act at different points. This means that they give rise to a torque on dipole. The turning effect of this torque is to reduce the angle q towards zero, and make the dipole moment vector become parallel to the field.

Why does a dipole rotate in an electric field?

1: A dipole in an external electric field. (a) The net force on the dipole is zero, but the net torque is not. As a result, the dipole rotates, becoming aligned with the external field. … The forces on the two charges are equal and opposite, so there is no net force on the dipole.

Does an electric dipole always experience a torque in electric field when is the torque on the electric dipole maximum and minimum?

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 [{{90}^{o}}] with the electric field, which is the most unstable position.

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