# Category «General terms»

## Electroscope

## Electromagnet

An electromagnet is a coil with a ferromagnetic core inserted into it. The magnetic field of a current-carrying coil is of particular practical interest. If a coil with current is suspended on thin and flexible wires, it will align itself just like a compass needle: one end will point north, and the other end will …

## Electric charge

## Coulomb’s Law

## Ohm’s Law

Ohm’s Law This law takes into account the key quantitative characteristics of an electric circuit: Ohm’s Law А law stating that electric current is proportional to voltage and inversely proportional to resistance. To describe an electric circuit that does not contain EMF, you can use Ohm’s law for a section of the circuit. This is …

## Semiconductor

## Electric current

Electric current is the ordered movement of charged particles. The words “electric current” and “electricity” are familiar to everyone and are used in homes for lighting (light bulbs, spotlights), transportation, factories, etc. To understand what electric current is, it is necessary to familiarize oneself with a significant range of phenomena. Electrification of a body The …