Fundamental of Electric Circuits Questions with Correct Answers Rated A+

Electrical Circuits - the structures that provide paths through which electricity travels Electrical Circuits - path along which electrons flow; may be wired as series circuits or parallel circuits Active Elements - possess energy of their own and can impart it to other element of the circuit voltage source - a device that creates a potential difference in an electric circuit Current source - A device that produces a constant current for a varying load. Passive Elements - Electronic devices that cannot create energy Active Elements - Diodes, Transistors, SCR, Integrated Circuits Passive Elements - Resistors, Inductorsm Capacitors, Transformers Resistors - Devices that apply resistance to a circuit to manage current Resistors - objects that allow charge to flow at a reduced rate Resistors - control the amount of electricity that needs to flow Capacitors - have the ability to store and discharge electrical potential energy Capacitors - like small rechargeable batteries that store small amounts of charge in them Capacitors - Allows AC and resist DC Polarized - capacitors that have a positive and negative terminal Non-polarized - capacitors that do not have any positive or negative terminals Inductors - materials that do not allow electric charges to flow through them easily; contain 5-8 valence electrons; ex. mica, glass, quartz Light Emitting Diode - LED LED - used to indicate the state of current at any point in a circuit LED - checking the output voltage or current on a circuit becomes simpler with these light-based indicators Transistors - a tiny circuit board with millions of switches; located inside the CPU chip Transistors - used to build complex electrical systems, such as amplifiers for instance Inductors - used to build complicated electrical systems Inductors - essentially coils of wire that are wound around other components Integrated Circuits - electrical components that combine, or integrate, numerous electrical components Integrated Circuits - like a ready-made chip that you can use to complete the project you want to build without having to use lots of single transistors or capacitors Integrated Circuits - chips that contain large numbers of tiny transistors fabricated into a semiconducting material called silicon Physical - properties that are measurable Mechanical - _________ properties are how the metal performs when different forces are applied to them Mechanical - may be greatly affected by processing due to rearrangement of the internal structure Physical - Metalworking processes or heat treatment might play a role in affecting some.... Come Come Dance Dance Everyone Fly High People Since Tomorrow Wow - Mnemonics properties Conductivity - The ability of an object to transfer heat or electricity to another object. It is measured as one degree per unit of time, per unit of cross-sectioned area, per unit of length Low thermal conductivity - used as insulators High thermal conductivity - may be a heat sink corrosion resistance - describes a material's ability to prevent natural chemical or electro-chemical attack by atmosphere, moisture or other agents Pitting galvanic stress parting intergranular - Forms of corrosion corrosion resistance - expressed as the maximum depth in mils to which corrosion would penetrate in one year; it is based on a linear extrapolation of penetration occurring during the lifetime of a given test or service corrosion resistance - a product's resistance to deterioration by a chemical or electrochemical reaction resulting from exposure to moisture, chemicals, or other elements Density - often expressed as pounds per cubic inch, or grams per cubic centimeter, etc., describes the mass of the alloy per unit volume Density - important in applications like aerospace or automotive where weight is important