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.
What would happen if the electric field E is increasing?
Thus that means the electric field on the positive charge will be larger than that on negative charge. Hence positive charge will experience more force than negative charge. So the net force will be towards the positive charge which will cause the dipole to move in the direction of the electric field.
How does the electric field E vary with distance?
The strength of an electric field as created by source charge Q is inversely related to square of the distance from the source. This is known as an inverse square law. … If the separation distance increases by a factor of 4, the electric field strength decreases by a factor of 16 (4^2).
What is external electric field?
The external electric field is a fundamental requirement for electrospinning and an important factor governing the fiber diameter. In melt-electrospinning, the only force that is responsible for fiber stretching is the electrostatic force, as there is no solvent evaporation.
What happens to an electric dipole when it is placed in external electric field?
If a dipole is kept in an external electric field, it experiences a rotating effect. By external electric field, we mean electric field that is not induced by dipole itself. The rotating effect is also called torque on the dipole. … This can be done by calculating the net torque on opposite charges of the dipole.
What will happen if electric field is not uniform?
No torque and no net force. … Now, for a non-uniform electric field there will be a torque on the dipole but also a net force. Once the dipole comes parallel to the electric field vector a force will act on the dipole in the direction of increasing field.
What happens if the electric field is non uniform?
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.
Why does the electric field due to a dipole decrease more rapidly with increasing distance than that for a single charge?
Why does the electric field due to a dipole decrease more rapidly with increasing distance than that for a single charge? The total charge of the dipole is neutral (zero). Which one of the following statements concerning the electric dipole moment is false?
What is the magnitude of the electric field strength E such that an electron placed in the field would experience an electric force equal to its weight?
The magnitude of electric field intensity E such that an electron placed in it would experience an electrical force equal to its weight is given by ….. therefore electric field intensity E is given by mg/e.
What happens to the electric potential energy if the distance between the source charge and the test charge is tripled?
A doubling of the separation distance between two point charges results in a quadrupling of the electric force. A tripling of the separation distance between two point charges results in an electric force which is one-sixth of the original value.
What is external field?
Introduction. When an external field (e.g., electric and gravitational fields) is applied to a suspension of charged colloidal particles in a liquid, the external field accelerates the particles and at the same time a viscous force exerted by the liquid on the particles tends to retard the particles.
Why are electric fields important?
Electric fields (e-fields) are an important tool in understanding how electricity begins and continues to flow. Electric fields describe the pulling or pushing force in a space between charges. … The electric fields of single charges. A negative charge has an inward electric field because it attracts positive charges.
What is the significance of electric field?
Electric field is a thus independent of the amount of the test charge and is property of system of charges i.e the source charges. It gives the magnitude and direction of the electric force. In time varying electromagnetic properties,the concept of electric field intensity becomes very important.