In the previous article, I explained the capacitance of different types of capacitors. A parallel plate capacitor is one of the most popular capacitors and it has wide applications in electrical circuits. In this article, I’m going to explore the capacitance of a parallel plate capacitor and its behavior in presence of a dielectric medium … Read more
A Capacitor is one of the most useful circuit components. A capacitor can store electric charge or electric energy in it. The capacitor is nothing but a conductor or the combination of two conductors having equal and opposite charges. Then what makes the capacitor different from a conductor? What are the different types of capacitors? … Read more
Electrostatics Lecture – 6: In the third article on electrostatics, we became to know that an electric charge can produce an electric field around it. Then we studied its properties and other things related to it. Since there are various types of charge distribution in different conductors, the formula for the electric field will be … Read more
In other articles, we became to know that an electric charge can produce an electric field around it and one can use Gauss’s law to find the electric fields due to charged conductors. This electric field is responsible for the electrostatic force between the charges. As a result, charged particles move in the electric field … Read more
We have learned the electric Potential and potential energy in other articles. In this article, we are going to discuss the equipotential surface and its properties. Here we will consider that the equipotential surface in a uniform electric field. That means the strength of the electric field is equal at every point and electric field … Read more
If an external electric field is applied across a conductor, free electrons move in the conductor. The velocities of all the electrons are not the same at every point in the conductor. Therefore, we need to consider the average value of the velocities of the electrons. It is nothing but the drift velocity. In this … Read more
We have discussed the origin and definition of magnetic field. A bar magnet, a current-carrying wire and a moving charge are the origins of magnetic field. Then we learned to find the direction of magnetic field in another article. Now, how to find the magnitude or value of the magnetic field? Biot-Savart law of magnetostatics … Read more
We already know that the Ohm’s law is a fundamental law in current electricity. But, Scientist Kirchhoff has given another two fundamental rules of electricity. With the help of these two rules one can easily find the current, voltage and resistance in an electrical circuit by using nodal analysis and loop analysis methods. In this … Read more
There are two basic laws of current electricity – one is Ohm’s law and another one is Kirchhoff’s law. Ohm’s law of current electricity gives the simplest relation between the electric current and voltage across a resistance. Kirchhoff’s laws tell us how to calculate electric current and voltage at a junction point or in a … Read more
Scientist Oersted observed that a current carrying wire produces magnetic field around it. One can find the magnitude of the magnetic field by using Biot-Savart law and Ampere’s circuital law. The direction of the magnetic field can be found by using Fleming’s right hand Thumb rule and Maxwell’s corkscrew rule. Have you ever wondered if … Read more
