What is Electric Field – Definition, Calculation and Example

Definition: A point charge at rest creates a force field in its surrounding. This force filed is known as Electric Field. You can understand force field like a field created by a magnet in its surrounding due to which iron piece get attracted toward the magnet. Another example of force field is gravitational field. Thus, … Read more

What is Lenz’s Law?-Definition with Diagram

Definition: Lenz’s Law states that the direction of the induced current is such that it opposes the change that has induced it. In other words, it is defined as “Effect Opposes the Cause”. Lenz’s Law is used to find the direction of induced current in a conducting loop. As per Faraday’s Law of electromagnetic induction, a current … Read more

What is Eddy Current? – Concept of Electromagnetic Damping

What is Eddy Current? The literal meaning of Eddy is a circular current. Thus the word itself means current having no definite circular loop. Eddy current is defined as the induced current on the surface of conductor in little loops or eddies due to changing magnetic flux. To better understand the concept of eddy current, … Read more

Gauss Law and its Application

Gauss Law states that, the flux of net Electric Field through a closed surface is equal to the net charge enclosed by the closed surface divided by permitivity of space. Therefore, mathematically it can be written as ∫E.ds = Qint/ξ     (Integration is done over the entire surface.) where Qint = Total charge enclosed … Read more

Coulomb’s Law

Coulomb’s law is an experimental law formulated in 1785 by the French colonel, Charles Augustin de Coulomb. It deals with the force a point charge exerts on another point charge. By a point charge we mean a charge that is located on a body whose dimensions are much smaller than other relevant dimensions. For example, … Read more

How does Motional EMF Produced?

Motional EMF is the potential difference produced across the length of a conductor moving in a Magnetic Field. Suppose a conductor of length l is moving with a velocity v in a uniform magnetic field B as shown in figure below. As the conductor is having mobile electrons which can move freely, therefore we can … Read more