The magnetic field describes the influence of electrical charges in magnetized material and relevant motion. A magnetic field can only be generated when the electrons move through the electrical conductor. The geometric shapes of flux are produced by moving electric current through the shapes which are similar in the electrostatic field. There are many ways … Read more
1. Find the equivalent capacitance of system of capacitors shown below. Equivalent capacitance of two capacitors each having capacitance C are connected in series. So,equivalent capacitance = $C/2$ Therefore, the circuit can be drawn like, $C/2$, $C$and $C/2$are now in parallel. So the equivalent capacitance, $C/2$+$C$+ $C/2=2C$ Four capacitors are connected as shown below. If … Read more
Potential due to an electric dipole: Let us consider charge $-q$ is placed at point $P$ and charge $+q$ is placed at point $Q Figure:8.a Electric potential at point $R$ due to electric dipole would be sum of potential due to both the charges $+q$ and $-q$. So, ………………….. (1) Draw two perpendiculars $PC$ and … Read more
Electrostatic potential at any point of an electric field is defined as potential energy per unit charge at that point. Electric Potential Energy: Let us consider a system of two point charges $q$ and $q^{‘}$ (positive test charge) separated by a distance $r$ Figure:7.a Charge $q$ is fixed at point $P$ and is displaced from … Read more
Capacitor is a two-terminal electric component that has the ability or capacity to store energy in the form of electric charge. The ability of a capacitor to store the energy in the form of an electric charge is known as Capacitance. Symbol of a capacitor: Figure:9.a Charging a capacitor: The plates of the capacitor are … Read more
Gauss’s law is basically the relation between the charge distribution to the behavior of the electrostatic field in space. Before we discuss Gauss’s law in detail, let us study the electric field due to continuous charge distributions. Let us consider that charges on a surface are located very close together so that such a system … Read more
Let us consider a system, in which a charge $Q$ is placed at the origin and another charge $q$ is placed at a point P. There will be some force of attraction or repulsion between two charges. Now if charge q is removed from the system, there are two possibilities. There is nothing at point … Read more
Lets us express the force between two point charges in terms of their position vector. Figure:2.a Consider two point charges $q_{1}$and $q_{2}$are at P and Q respectively. The position vector of point P is = and that of point Q is . Let $r$ be the distance between these charges. We have, Where is the … Read more
Electric Flux: Electric Flux is defined as a number of electric field lines, passing per unit area. Consider a plane surface of the area ?S in a uniform electric field E. A positive normal N to the surface makes angle $\theta$ with the electric field E. Figure:4.a Electric flux of the electric field through ?S … Read more
Coulomb’s law is a quantitative statement about the force between two point charges and it is an analog of Newton’s Universal Law of Gravitation. Coulomb’s law states that the force of attraction or repulsion between two stationary point charges is directly proportional to the product of the magnitude of two charges and inversely proportional to … Read more