A switch is the most common device used in everyday life for turning on and off the electrical appliances. A switch can make or break a circuit. The electric current can flow in a circuit till the switch is in ON state. The switches are commonly used to turn on and off various electrical appliances like fans, lamps, coolers, ACs, etc.There are a number of switches available, but in this article, we will only discuss about the one-way switch and two-way switch and the key differences between the one-way switch and two-way switch.What is a One-Way Switch?A one-way switch is ... Read More

In electrical power system, various devices are used to ensure the safe operation of electrical equipment. The most important set of these devices that helps to ensure this safety is switchgears. Amongst these switchgears, the circuit breakers and isolators are commonly used in every electrical power system. These two devices are very important in an electrical power system.The isolator and circuit breaker both have a similar function of disconnecting the electrical circuits when there is an issue in electrical system. Therefore, they are closely related to each other, however, there are many differences between circuit breaker and isolator that draw ... Read More

An electric circuit is the interconnection of circuit elements which carries the electric power from the source to the load. Sometimes, the electric power (or voltage or current) in the circuit may increase suddenly, which cause damages of the load or other devices in the circuit. Therefore, in order to protect the electric circuit and appliances from getting damaged due to abnormalities in the circuit, two protecting devices viz. fuse and circuit breaker are used in the circuit.In this article, we will discuss about the differences between fuse and circuit breaker. Also, we will add a brief description of both ... Read More

Contactor and relay are both electromagnetic switches that are designed to provide switching and controlling functions in the electric circuits. The primary function of both relay and contactor is similar, but there are many differences between them that are listed in the table below.The major difference between these two devices is that a relay is suitable for voltage and current applications, whereas a contactor is suitable for high voltage and current applications. Relays and contactors are both switches which are operated electrically for providing switching and controlling of the circuit.This article will provide all the noticeable differences between a contactor ... Read More

In electrical engineering, a transformer is a static electrical machine which is employed for transforming the level of alternating voltage, i.e. for stepping-up and stepping down the voltage, for transmitting the electric power from generating station to utility points.The transformer changes the level of alternating voltage without changing its frequency. The transformer works on the principle mutual inductance. A typical transformer consists of two windings one is primary winding and the other is secondary winding. The input supply is connected to the primary winding of the transformer, while the transformed output is taken from the secondary winding, also the load ... Read More

In an AC electric circuit, when the capacitive reactance is balanced by the inductive reactance at some given frequency, then this condition in the circuit is referred as resonance. The frequency of the supply voltage at which resonance occurs in the circuit is called resonant frequency. At the resonance in the circuit, the reactance of the capacitor and inductor cancel each other. Also, at the condition of resonance, no reactive power is taken from the source.Based on the arrangement of capacitor and inductor in the electric circuit, the resonance is divided in two types viz. −Series resonanceParallel resonanceIn this article, we ... Read More

In electric circuits, resistance (or resistor) is one of the elementary component. The resistors are connected in different fashion in an electric circuit, such as series,  parallel and series-parallel, etc.This article is meant for explaining the differences between combination of resistances in series and parallel. Also, we have briefly explained the series combination and parallel combination of resistances.Resistances in SeriesWhen two or more resistances are connected end to end, i.e. the ending terminal of one resistance is connected to starting terminal of second resistance, and the ending terminal of second resistance to the starting end of third resistance and so ... Read More

Resistance and resistivity are the major terms associated with the opposition in the flow of electric current in a circuit. The most significant difference between resistance and resistivity is that resistance is the measure of opposition offered by the material in the path of electric current, whereas resistivity is the property of material by virtue of which it opposes the electric current.In this article, we have explained all the significant differences between the resistance and resistivity in detail. Also, we have added a short description of resistance and resistivity for the reference of reader.What is Resistance?Electrical resistance is defined as ... Read More

Resistance and reactance are the two major parameters of an electric circuit element that together form the impedance of the circuit element. One most significant difference between resistance and reactance is that the resistance is the opposition in the flow of electric current offered by a circuit element called resistor, whereas the reactance is the opposition in the change in the magnitude and direction of the current and voltage offered by a circuit element called inductor or capacitor. The combined opposition offered by the resistance and reactance in an electric circuit is known as impedance of the circuit. In this ... Read More

Both multimeter and clamp meter are types of electronic measuring and testing instruments used to measure different types electrical quantities such as current, voltage, resistance, etc. However, these two devices test different electrical measurements. It is difficult to find out which instrument to choose for a specific measurement, especially if one is new to electrical work. But, in simple words, we can say that a multimeter is used to measure current, voltage, resistance, continuity, etc. while the clamp meter is used to measure currents.In this article, we have explained the differences between the multimeter and clamp meter along with their ... Read More