Class 12

Dielectrics are materials that become polarised when subjected to an electric field. Due to the action of the external electric field, the charges in the molecules move apart from each other, reducing the strength of the electric field in that medium. We have free electrons in metals. When a conductor is held in an external […]

In the case of electromagnetism, a dielectric is referred to as a kind of electrical insulator. At the same time, it is capable of being polarised through an electric field that is applied. Moreover, whenever a dielectric material is located at the electric field, the electric charges don’t run all the way through the material

Electrostatics is the branch of physics that deals with the charges that are either not in motion or are very slow-moving. For instance, the charges that attract two balloons are very slow and are an example of electrostatics.  The observations made in the 18th century, such as charges either attract each other or get repealed

In nature, charge is the physical property of matter which exhibits different characteristics. When we rub our hair over a silk cloth, the crackling sound appears with the exertion of our hair towards the cloth, as if an attraction is caused towards it. This is mainly due to the famous property of multiple electric charges

The term coulomb originated from a French physicist, Charles Augustin de Coulomb. The symbol of this unit is C; 1 coulomb is equivalent to 1 ampere-second. To put this in words, an electric-powered current of 1 ampere represents 1 C of unit electric charges flowing across a selected point in 1 second. In terms of

STATEMENT: Coulomb’s Law states the amount of the force exerted by each charge on the other charge (remember Newton’s 3rd law).                                         F = K(|q1| | q2| /r2) The symbol k in this context refers to electrical forces and has nothing to do with spring constants or Boltzmann’s constant!    K            = 

If the continuous charge of distribution is not properly distributed over the length of the conductor then this is called linear charge density and is denoted by lambda. The unit of a linear load of density is C/m. If we find a conductor with a length of L with a surface load density and take

The Conductors and Insulators is one of the most important topics in Physics present in the syllabus of various competitive examinations. Also, the students preparing for them should go through this article, as it holds helpful information that can help them in their future. This article, along with other articles, blogs, and notes, helps cover

What is Pressure? Have you ever noticed that your ears get blocked and hearing becomes lower when you ascend or descend a mountain at a fast pace? Or why do our knives need to be extremely sharp? The answer lies in the concept of pressure.  If you try to hammer a bowling pin into a

Microscopically, the electric charge is quantised. It isn’t easy to look at individual charges in charged bodies when dealing with their electric fields. As a result, the charge is thought to be spread continuously, and its discrete nature is ignored. The electric field resulting from such continuous charge distributions is calculated using the calculus approach.