Question

Accurately describe a field from a dipole (magnetic or electric) and analyze its effects and effects of magnetic/electric fields on them

Answer 1

Ans;-

As in question it is asked to describe any of magnetic or electric dipole

First of all I want to tell you briefly about

a) Electric dipole and Electric field:

b) Magnetic dipole and Magnetic fields

b) Electric dipole:-

An electric dipole is a separation of positive and negative charges. The simplest example of this is a pair of electriccharges of equal magnitude but opposite sign, separated by some (usually small) distance. A permanent electric dipole is called an electret.

Electric field lines provide a means to visualize the electric field. Since theelectric field is a vector, electric field lines have arrows showing the direction of the electric field. As two examples, we show the electric field lines of a single point charge, and of a positive and negative charge.

An electric dipole consists of two opposite charges, the electric field decreases more rapidly compared to the 1/r^2 character of a single charge. For the electric dipole the field it decreases as 1/r^3 with distance.

b) Magnetic dipole:-

A magnetic dipole is the limit of either a closed loop of electric current or a pair of poles as the dimensions of the source are reduced to zero while keeping themagnetic moment constant. It is a magnetic analogue of the electric dipole, but the analogy is not perfect.

Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges). Like poles repel; unlike poles attract.

Now to magnetic field I am describing accurately

We define a magnetic field to represent magnetic forces. The pictorial representation of magnetic field lines for magnetic dipole will be very useful in visualizing the strength and direction of the magnetic field dipole accurately. As shown in below

, the direction of magnetic field lines is defined to be the direction in which the north end of a compass needle points. The magnetic field is traditionally called the B-field.

Remark:-

i) When an electron moves, it creates a second field—a magnetic field. When electrons are made to flow in a current through a conductor, such as a piece of metal or a coil of wire, the conductor becomes a temporary magnet—an electromagnet.

ii) The way in which charges and currents interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law.