# Electrical Engineering

## Collection by Electrical4U • Last updated 23 hours ago

Everything electrical engineering - Transformers, Generators, Batteries, Theory, and more.

### Admittance: What is it? (Formula & Admittance vs Impedance) | Electrical4U

A SIMPLE explanation of Admittance. Learn what admittance is, the admittance triangle, admittance in series & parallel, its formula, units, and Admittance vs Impedance. Plus we discuss ...

### Magnetic Reluctance: What is it? (Formula, Units & Applications) | Electrical4U

A SIMPLE explanation of a Magnetic Reluctance. Learn what Magnetic Reluctance is, its formula & units, applications, and Permeance vs Reluctance. Magnetic reluctance (also known as reluctance, magnetic resistance, or a magnetic insulator) is defined as ...

### Radiometry: What is it? (Microwave & Photothermal) | Electrical4U

A SIMPLE explanation of Radiometry. Learn what Radiometry is, including Microwave Radiometry and Photothermal Radiometry. Radiometry is a technique to measure electromagnetic radiation ...

### What is a Transformer? Definition and Working Principle | Electrical4U

A SIMPLE explanation of how a Transformer works. We discuss the WORKING PRINCIPLE of a Transformer – including lots of diagrams. We go over an easy way to...

### Work Function: Formula & Relation To Threshold Frequency | Electrical4U

A SIMPLE explanation of Work Function in Physics. Learn what Work Function is, its Formula, Equations, and relation to Threshold Frequency. Learn how to find and calculate work function.

### What are the Different Types of Resistors? | Electrical4U

A resistor is a passive component in a circuit which provides resistance to the flow of current. There are many different types of resistors â learn all about them in this post.Â #Electrical4UÂ #electricalengineeringÂ #resistorsÂ #resistance

### SWR Meter: What Is It & How To Use It | Electrical4U

A SIMPLE explanation of an SWR Meter (Standing Wave Ratio meter). Learn what an SWR Meter is, how an SWR Meter works, and how to use an SWR Meter. We also discuss ...

### Cutoff Frequency: What is it? Equation & How To Find it | Electrical4U

A SIMPLE explanation of Cutoff Frequency. Learn what Cutoff Frequency, how to find Cutoff Frequency, and the equation for cut off frequency. We also discuss ...

### What are the Different Types of Resistors? | Electrical4U

A resistor is a passive component in a circuit which provides resistance to the flow of current. There are many different types of resistors â learn all about them in this post.Â #Electrical4UÂ #electricalengineeringÂ #resistorsÂ #resistance

### Nominal Voltage: What Does it Mean? (vs. Operating & Rated Voltage) | Electrical4U

A SIMPLE explanation of Nominal Voltage. Learn the definition & meaning of Nominal voltage, Rated voltage vs Nominal Voltage vs Operating Voltage, and the Nominal Voltage of a Battery. We also discuss ...

### Dielectric Grease: What it is & How to use it | Electrical4U

What is Dielectric Grease? Dielectric grease is a silicone-based grease that is used in an electric circuit to protect components from dirt, moisture, and corrosion. Dielectric grease is also known as silicone grease. It is a non-conductive material used in the electrical circuit to transfer heat from the device. It…

### Permeance: Definition, Units & Coefficient | Electrical4U

[latexpage] What is Permeance? Permeance is defined as a measure of the ease with which magnetic flux can be admitted through a material or magnetic circuit. Permeance is the reciprocal of reluctance. Permeance is directly proportional to the magnetic flux and is denoted by the letter P. $ Permeance (P)…

### Induction Motor: Working Principle, Types, & Definition | Electrical4U

Learn all about Induction Motors – including the working principle of an induction motor, and the different types of induction motors available. We also cover ...

### Seebeck Effect: What is it? (Voltage, Coefficient & Formula) | Electrical4U

What is the Seebeck Effect? The Seebeck effect (often misspelled as ‘Seeback effect’) is the build-up of an electric potential across a temperature gradient in different electrical conductors or semiconductors. For example, a thermocouple measures the difference in potential across a hot and cold end for two dissimilar materials (e.g.…

### Network Topology: Types, Diagrams, and Definition | Electrical4U

A SIMPLE explanation of Network Topology. Learn what network topology is, the TYPES of network topologies – including Star, Bus, Ring, and Mesh networks. Plus...