Capacitors

A capacitor is an electronic component that can store electric charge. A capacitor is constructed with two conductive plates separated by an insulator called a dielectric. More ...

Inductor Mutual Inductance and Coefficient of Coupling

Mutual Inductance the property of a coil in which it opposes the change of current in another coil. The coefficient of coupling between two coils is the fraction of magnetic flux produced by the current in one coil that links with the other coil. More ...

Inductors in Series and Parallel

With inductors connected in series, the total inductance is the sum of the inductances of the individual inductors With inductors in parallel, the reciprocal of the equivalent inductance is the sum of the reciprocals of the inductors connected in parallel. More ...

Brief Description of the Chemical and Physical Properties of Elements in the Periodic Table

Atoms are the building blocks of all matter. Different kinds of atoms are referred to as 'elements,' and they are compiled into a chart called the periodic table. The table allows similar elements to be grouped together based on their chemical properties. More ...

Properties of Algebra

In this article you learn how to simplify algebraic expressions by substituting given values, distributing, and combining like terms. More ...

Magnetism

Electric currents and magnetic fields are closely related. Whenever an electric current flows a magnetic field accompanies the current. When a wire is coiled up, the resulting magnetic flux becomes more concentrated. More ...

Reduce, Add, Subtract, Multiply and Divide Signed Fractions

Algebra rules and examples about how to reduce, add, subtract, multiply and divide signed fractions. More ...

Inductors in Series and Parallel

Inductances in series add like resistances in series. The total value is the sum of the individual values. Inductances in parallel values add up like the values of resistors in parallel. The reciprocal of total inductance is the sum of reciprocals of all the individual inductances. More ...

Leonardo Da Vinci - Leonardo's Animals

Leonardo da Vinci had a great love for animals. He was a vegetarian. He wrote, 'The time will come when men such as I will look upon the murder of animals as they now look on the murder of men.' More ...

Electric Fields and Static Electricity

Static electricity is a phenomenon caused by a buildup of unbalanced electric charge that is not moving. We are all familiar with the static electric charge caused by dragging our feet across a carpet and then the sudden static discharge caused by grabbing a door knob. More ...

Phase shift in AC Circuits

In an AC circuit with a capacitor or an inductor there is a phase shift between voltage and current. In this article you learn how to calculate the amount of that phase shift. More ...

Inductive Reactance

The opposition that the coil offers to ac is called inductive reactance. Like resistance, reactance is measured in ohms. Unlike resistance, reactance changes with frequency. And in an Inductor, the Voltage leads the Current by 90 degrees. More ...

Add, Subtract, Multiply and Divide Positive and Negative Integers

Algebra rules and examples about how to add, subtract, multiply and divide positive and negative integers. More ...

All About Microbes

Microbes (short for microorganisms) are tiny living things, too small to be seen by the naked eye, that are all around us and even inside of us. Some microbes are friendly, even helpful, while other microbes can kill. More ...