Voltage drop across capacitor – formula and concepts

A Capacitor is one of the important components in electrical circuit. We have discussed on capacitors, their combinations and other related facts in other articles. Like other components (resistors, inductors), a capacitor also offer an opposition to the current flow through it. From the Ohm’s law, we get an expression for voltage drop across a … Read more

Capacitance of Earth in microfarad | formula value

To find the capacitor of Earth we consider that the Earth is a spherical conductor with radius R and total charge Q. In fact, using this assumption one can determine the capacitance of any planet and satellite like Mercury, Mars, Moon, etc. In this article, we are going to find capacitance of Earth in microfarad … Read more

MCQ on electric potential for class 12 CBSE

In this article, we are going to discuss MCQ questions on electric potential for class 12. These multiple choice questions on electrostatic potential will be helpful for class 12 students of CBSE board and all other boards. Chapter-2: Electrostatic potential and Capacitance MCQ on electric potential 1. If V be the electric potential at the … Read more

MCQ on electric field for CBSE class 12 chapter 1

We have already learned electric charges and electric field in details. Now, its time to practice some multiple choice questions on electric charges and electric fields for class 12 physics. It is very helpful for board exams and NEET exam. This topic is included in class 12 NCERT physics chapter 1 for CBSE and other … Read more

Formula for energy stored in the capacitor – Derive

We know that a capacitor can store electric charge and can release them whenever required. So, a capacitor has the capacity to store electric charges. Again, if we apply a voltage to a capacitor an electric field develops inside it. The application of voltage produces electric field and this electric field forces the charges to … Read more

Capacitance of parallel plate capacitor with dielectric medium

We have discussed the basic things of a capacitor in previous article. That article covered the definition, construction, types, formula and uses of a capacitor. In this article, we are going to discuss capacitance of parallel plate capacitor and its behavior in presence of dielectric medium or slab between the plates of the capacitor. Contents … Read more

Formula for capacitance of a capacitor | definition types

Capacitor is one of the most important circuit components. A capacitor is nothing but a conductor or the combination of two conductors having equal and opposite charges. Now, what is the difference between a capacitor and a conductor? What makes the capacitor different from a conductor? A capacitor is made of two conductors that can … Read more

Gauss’s law of electrostatics to find electric field

In other articles, we learned that an electric charge can produce an electric field around it. Then we studied its effects and properties. Also, we became to know that charges feel Coulomb’s force due to the existence of the electric field. Now, we need a formula or equation to find the electric field produced by … Read more

Formula of electrostatic potential energy | electric potential

In other articles, we became to know that an electric charge can produce an electric field around it. Then we leaned the electrostatic force between the charges. After that, we introduced the Gauss’s law to find the electric fields due to charged conductors. Again, in mechanics, we learned that a work is to be done … Read more

Properties of Equipotential surface in uniform electric field

We have learned the electric Potential and potential energy in another article. Now, 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. In a uniform electric field, the strength of the field is equal at every point … Read more