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Electrical module 3
Stack #3108571
| Question | Answer |
|---|---|
| Amperes | The basic unit of measurement for electrical current, represented by the letter A. |
| Atoms | The smallest particles to which an element may be divided and still retain the properties of the element. |
| Battery | A DC voltage source consisting of two or more cells that convert chemical energy into electrical energy. |
| Charge | A quantity of electricity that is either positive or negative. |
| Circuit | A complete path for current to flow. |
| Conductors | Materials through which it is relatively easy to maintain an electric current. |
| Current | The movement, or flow, of electrons in a circuit. Current(I) is measured in amperes |
| Electrons | Negatively charged particles that orbit the nucleus of an atom. |
| Insulator | A material through which it is difficult to conduct an electric current. |
| Matter | Any substance that has mass and occupies space. |
| Neutrons | Electrically neutral particles (neither positive nor negative) that have the same mass as a proton and are found in the nucleus of an atom. |
| Nucleus | The center of an atom. It contains the protons and neutrons of the atom. |
| Ohms (Ω) | The basic unit of measurement for resistance, Represented by the symbol Ω. |
| Power | The rate of doing work, or the rate at which energy is used or dissipated. Electrical power is measured in watts. |
| Proton | The smallest positively charged particle of an atom. Protons are contained in the nucleus of an atom. |
| Relays | Electromechanical devices consisting of a coil and one or more sets of contacts. Used as a switching device. |
| Resistance | An electrical property that opposes the flow of current through a circuit. Resistance (R) is measured in ohms. |
| Solenoids | Electromagnetic coils used to control a mechanical device such as a valve. |
| Transformers | Devices consisting of one or more coils of wire wrapped around a common core. Transformers are commonly used to step voltage up or down. |
| Valence shell | The outer most ring of electrons that orbit about the nucleus of an atom. |
| Volts (V) | The unit of measurement for voltage, represented by the letter V. One volt is equivalent to the force required to produce a current of one ampere through the resistance of one ohm. |
| Voltage | The driving force that makes current flow in a circuit. Voltage, often represented by the letter E, is also referred to as electromotive force (emf), difference of potential, or electrical pressure. |
| Watts (W) | The basic unit of measurement for electrical power, represented by the letter W. |
| Coulomb | A unit of electrical charge equal to 6.25 x 1018 electrons (or 6.25 quintillion electrons). A coulomb is the common unit of quantity used for specifying the size of a given charge. |
| Joule (J) | A unit of measurement for doing work, represented by the letter J. One joule is equal to one newton-meter (Nm). |
| Ohms law | A statement of the relationships among current, voltage, and resistance in an electrical circuit: current (I) equals voltage (E) divided by resistance (R). Generally expressed as a mathematical formula: I=E/R. |
| Resistors | Any device in a circuit that resist the flow of electrons. |
Created by:
Davy Akers