Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Faraday’s law, also known as Faraday’s law of electromagnetic induction, is a fundamental law of electromagnetism that predicts how a magnetic field interacts with an electric circuit to produce an electromotive force (EMF). This is referred to as “electromagnetic induction.”Faraday laws of electromagnetic induction:Faraday’s Laws of Electromagnetic Induction consist of two laws:1. The first law describes the induction of emf in a conductor and2. The second law calculates the conductor’s generat

Coulomb’s Law:Coulomb’s law states that the force of attraction or repulsion between two chargesis directly proportional to the product of their charges and inversely proportional to the square of their distance from one another. It functions on the section that connects the two charges that are regarded of as point charges.Coulomb’s Law Formula:Where,F= Electric Force,K= Coulomb’s Constant,q1, q2= chargesr= between distanceWhat Is one Coulomb of Charge?It is known as a coulomb when two charges

What is Lenz’s Law?Lenz’s law of electromagnetic induction explains that the direction of the current induced in a conductor by a changing magnetic field (as per Faraday’s law of electromagnetic induction) is such that the magnetic field created by the induced current opposes the changing magnetic field that caused it. The direction of thecurrent flow is shown byFleming’s right-hand rule.Lenz’s law is based on Faraday’s law of induction, which says that a changing magnetic field will cause a cur

What is DC Voltage?DC voltage stands for “Direct Current Voltage”. While this sounds confusing, the term “DC” has become used more broadly to refer to a system that has constant polarity. Hence DC voltage is a voltage that produces or would produce a DC current. Conversely, an AC voltage is a voltage that produces or would produce AC current.DC in this context refers more broadly to quantities that don’t regularly change polarity or that have zero (or effectively zero) frequency. AC refers to qu

Now consider an AC circuit with two voltage sources. Here, magnitude, polarity, and phase angle are used to find the equivalent voltage. Electrical Polarity in AC Voltages In the first figure, both sources have the same polarity. Hence, the equivalent voltage is the addition of both. But these are the polar form—First, we need to convert this polar form into a rectangular form. And it will be—Now, the equivalent voltage is the addition of each of the X-components and Y-components (i.e. )—Ag

A voltage source is a device that provides a constant or varying electric potential difference between its terminals. A current source is a device that provides a constant or varying electric current through its terminals. Both voltage and current sources are essential for powering various electrical circuits and devices.However, not all sources are the same. Depending on how they behave and interact with other circuit elements, sources can be classified into two main categories: independent and

What is the Temperature Coefficient of Resistance?The temperature coefficient of resistancemeasures changes in the electrical resistance of any substance per degree of temperature change.Let us take a conductor having a resistance of R0 at 0oC and Rt at toC, respectively.From the equation of resistance variation with temperature, we getThis αo is called the temperature coefficient of resistance of that substance at 0oC.From the above equation, it is clear that the change in electrical resistance

Joule’s Law:According to Joule’s Law, when a current flows in a conductor, the amount of heat generated is proportional to the current, resistance, and time in the current flowing.Joule’s law of Heating:The unit of Joules is used to measure the amount of heat generated by the movement of current in an electric wire. Following is a description of how Joule’s law is represented mathematically and explained.When the electrical resistance of the wire and the time the current is flowing are constant,

More than one electrical resistance can be connected either in series or in parallel in addition to that, more than two resistances can also be connected in combination of series and parallel both. Here we will discuss mainly about series and parallel combination.Resistances in SeriesSuppose you have three different types of resistors – R1, R2 and R3– and you connect them end to end as shown in the figure below, then it would be referred as resistances in series. In case of series connection, th

Resistivity or Coefficient of ResistanceResistivity or Coefficient of Resistance is a property of substance, due to which the substance offers opposition to the flow of current through it. Resistivity or Coefficient of Resistance of any substance can easily be calculated from the formula derived fromLaws of Resistance.Laws of ResistanceThe resistance of any substance depends on the following factors, Lengthof the substance. Cross sectional areaof the substance. Thenature of materialof the substa