Ionization Energy

The ability of an element to give away its outermost electrons to form positive ions is manifested in the amount of energy supplied to its atoms sufficiently enough to take away the electrons out of them. This energy is known as Ionisation Energy. Simply speaking, the Ionisation Energy is the energy supplied to an isolated … Read more

What is Electrical Energy Definition Formula Unit of Electrical Energy

What is Electrical Energy? Before explaining what electrical energy is, let us try to review the potential difference between two points in an electric field. Suppose potential difference between point A and point B in an electric is v volts. As per the definition of potential difference we can say, if one positive unit electrical … Read more

Cyclotron Basic Construction and Working Principle

Before understanding the basic working principle of Cyclotron it is necessary to understand force on a moving charged particle in a magnetic field and also motion of the charged particle in the magnetic field. Force on a Moving Charged Particle in a Magnetic Field When a current carrying conductor of length L metre with current … Read more

Electron volt or eV

The concept of electron volt is very simple. Let us start from very basic. We know the unit of power is watt. W = VI, where V is the voltage and I is the current. Now as I is current, it is nothing but rate of charge transfer. Therefore, instantaneous impression of power would be … Read more

RMS or Root Mean Square Value of AC Signal

Why rms values are used in AC system? What does an average and rms value mean? Why all the ratings of AC systems are in rms not in average value? What is the difference between rms and average value? These are the questions which come in our minds every time when we are dealing with … Read more

Electric Charge

Every matter in this universe is made of atoms. The atoms are electrically neutral. This is because, each atom has equal number of protons and electrons. Protons have positive charge. In an atom, protons sit in the central nucleus along with electrically neutral neutrons. The protons are strongly bounded in the nucleus. So, protons cannot … Read more

Electric Potential

Electric potential at a point in an electric field is defined as the amount of work to be done to bring a unit positive electric charge from infinity to that point. Similarly, the potential difference between two points is defined as the work required to be done for bringing a unit positive charge from one … Read more

Power in AC Circuit

AC circuits are usually three-phase for electrical distribution and electrical transmission purposes. Single phase circuits are commonly used in our domestic supply system. The total power of a three-phase AC circuit is equal to three times the single phase power. So if the power in a single phase of a three-phase system is ‘P’, then … Read more

Drift Velocity Drift Current and Electron Mobility

Definition of Drift Velocity If a particle moves in space in such a manner that it randomly changes its directions and velocities, the resultant of these random motions as a whole is called drift velocity. The definition of drift velocity can be understood by imagining the random motion of free electrons in a conductor. The … Read more

What is Electric Current and Theory of Electricity

What is Electric Current? The electric current is the rate of flow of electric charge through a conducting medium with respect to time. When there is a potential difference between two points in a conductive medium, electric charge starts flowing from the higher potential point to the lower potential point to balance the charge distribution … Read more