Types of Resistors

A resistor is a passive component in a circuit which provides resistance to the flow of current. There are many different types of resistors. These resistors vary in their construction, power dissipation capacities, and tolerance to various parameters (such as temperature and light). The types of resistors include: Carbon Composition Resistor Thermistor Wire Wound Resistor … Read more

Electric Power Single and Three Phase Power Active Reactive Apparent

Complex Power It is very conceptual and essential to understand. For establishing the expression of complex power, we have to first consider a single phase network that’s voltage and current can be represented in complex form as V.ejα and I.ejβ. Where α and β are angles that voltage vector and current vector subtend with respect … Read more

What is Electricity and How Electricity is Generated and Used

There are some inventions which charged the human civilization. The first invention was the wheel, the second invention was electricity, the third invention was telecommunication, and the fourth invention was the computer. We will discuss here the basic introduction of electricity. Each substance in this universe is made of plenty of atoms and each atom … Read more

Magnet and Magnetism

Magnet and Magnetism are utilized for operating all kinds of electrical machines. Hence we should have a deep concept of magnets and magnetism. The property of a magnet is called magnetism. The magnet is an element which can attract magnetic materials. Normally a magnet can attract iron, cobalt, steel, nickel. If a magnetic piece is … Read more

Permittivity and Relative Permittivity or Dielectric Constant

When we place two electrically charged bodies nearby they will experience a force among them. This force may either be attractive or be repulsive depending on the nature of the charge of two bodies. Two like charged bodies repel each other and two unlike charged bodies attract each other. The value of force acting on … Read more

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

Electric Field Strength or Electric Field Intensity

The force acting on a unit positive charge inside an electric field is termed as electric field strength or electric field intensity. Electric field strength or electric field intensity is the synonym of electric field. Electric field strength can be determined by Coulomb’s law. According to this law, the force ‘F’ between two point charges … Read more

Charging a Capacitor

Whenever we connect an uncharged or partly charged capacitor with a voltage source whos voltage is more than the voltage of the capacitor (in case of partly charged capacitor) it recieves charge from the source and the voltage across the capacitor rises exponentially until it becomes equal and opposite to voltage of the source. Let … Read more

What is Flux? Types of Flux?

What is Flux? Flux means an imaginary lines through which a physical quantity can travel. The word “Flux” is originated from the Latin Word ‘Fluxus’ that means flow. Isaac Newton first used this term as fluxion into differential calculus. In mathematics and physics flux is used as the basic and global word. Types of Flux … Read more

Working Principle of a Capacitor

To demonstrate how does a capacitor work, let us consider a most basic structure of a capacitor. It is made of two parallel conducting plates separated by a dielectric that is parallel plate capacitor. When we connect a battery (DC Voltage Source) across the capacitor, one plate (plate-I) gets attached to the positive end, and … Read more