100 Ohm resistor Color code of 3 4 and 5 bands

100 ohm carbon resistors are very much useful resistors in practical circuits. Hundred ohm resistors are available in 3, 4 and 5 bands. We need to identify it by solving its color code. In this tutorial post, we are going to explain how to read the color code of 100 ohm resistor to calculate its … Read more

Electricity cost per kWh | US

Every household use to pay money for the electricity. After receiving electric bill we reach to the electricity provider to pay the due amount of the bill. But do you know how is the electric bill calculated? You might say that we pay the bill according to units of electricity that we use. But, do … Read more

Carbon resistor Color code | how to calculate?

In Physics or Electronics labs you may have seen carbon resistors. This type of resistors is usually painted with three, four, five or six bands of different colors. These bands are the codes from which we can find the value of resistance of a resistor. Now, how to read resistor color code of carbon resistors? … Read more

Voltage drop across inductor – formula and polarity

We know three basic passive circuit components – Resistor, Capacitor and Inductor. One can find the voltage drop across a resistor simply by using Ohm’s law of current electricity. In another article, we have discussed the ways to find the voltage drop across a capacitor as well. In this article, we are going to explain … Read more

Why are metals good conductors of electricity and heat?

In current electricity, we became to know that the flow of electric charges is the electricity. Again, from the Thermodynamics, we know that the heat is an energy that can flow from one part to another part of a substance. You may have noticed that a wiring of copper (Cu) wire is used in our … Read more

Formula of Power factor in electrical circuit

Power factor is an important parameter in an electrical circuit. To deal with a circuit containing some components, we need to know how much power has to be supplied to the circuit so that the circuit works. Because, the power dissipated in the circuit is not always same as that of real power supplied by … Read more

Unity Power factor in electrical circuit | formula & concept

We already have discussed the Power factor of an electrical circuit and how to calculate the power factor, etc. You might have heard the term unity power factor while dealing with the power in electric AC circuits. In this article, we are going to discuss the concept and formula of Unity Power factor of an … Read more

How to calculate Power factor in electrical AC circuit?

In another article, we have discussed the power factor, its definition, its formula and other related facts on power factor. Now, we need to find the power factor in a circuit to know how much power is delivering to its output and how much power is losing in circuit components. In this article, we are … Read more

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

Impedance of Inductor formula | Inductive reactance

In another article, we have discussed the electrical impedance of various circuit components like resistors, capacitors, inductors and their combination (LC, RLC, RC circuits). In this communication, we are going to be more specific. Here, we are to discuss the electrical impedance of an inductor coil and all related facts. Also, we will learn to … Read more