Details Title: Ch 1 Grob's Basic Electronics. Description: A collection of important terms and questions from the self tests in the 10th edition of the book Total Flash Cards: 43 Created: 01/15/2009 13:43:18		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term Alternating Current (AC) Definition A current that periodically reverses in direction as the alternating voltage periodically reverses in polarity. Term Ampere Definition The basic unit of current   1 A = 1C/1s Term Circuit Definition A path for current flow Term compound Definition a combination of two or more elements Term Conductance Definition the reciprocal of resistance Also, Electrical conductance is a measure of how easily electricity flows along a certain path through an electrical element Term Conductor Definition Any material That allows the free movement of electric charges, such as electrons, to provide an electric current. Term Conventional Current Definition The direction of current flow associated with positive charges in motion. The current flow direction is from a positive to negative potential, which is in the opposite direction of electron flow. Term Couloumb Definition The basic unit of electric charge. 1 C = 6.25 X 10­18 electrons or protons. Term Current Definition A movement of electric charges around a closed path or circuit Term Dielectric Definition Another name for insulator Term Direct Current Definition a current flow that has just one direction Term Electron Definition The most basic particle of negative charge Term Electron Flow Definition The movement of electrons that provides current in a circuit. The current flow direction is from a negative to a positive potential, which is in the opposite direction of conventional current. Term Electron Valence Definition The number of electrons in an incomplete outermost shell of an atom Term Free Electron Definition An electron that can move freely from one atom to the next Term Insulator Definition A material with atoms in which the elctrons tend to stay in their own orbits Term Ion Definition an atom that has either gained or lost one or more valence electrons to become electrically charged Term Nuetron Definition a particle contained in the nucleus of an atom that is electrically nuetral Term Nucleus Definition The massive, stable part of the atom that contains both protons and neutrons. Term Ohm Definition the unit of resistance Term Potential Difference Definition a property associated with two unlike charges in close proximity to each other Term proton Definition the most basic particle of positive charge Term Resistance Definition the opposition to the flow of current in an electric circuit Term Semiconductor Definition a material which is neither a good conductor nor a good insulator Term Siemens Definition the unit of conductance. Term Static Electricity Definition any charge, positive or negative that is stationary or not in motion. Term Volt Definition The unit of potential difference or voltage. V = J/C Term The most basic particle of negative charge is the Definition Electron Term The coulomb is a unit of Definition Electrical Charge Term Which of the following is not a good conductor. (Copper, Silver, Glass, Gold) Definition Glass Term The electron valence of a copper atom is Definition +1 Term The unit of potential difference is the Definition volt Term A 100Ω resistor has a conductance, G, of Definition 0.01 S. Term The most basic particle of positive charge is the Definition proton Term If a neutral atom loses one of its valence electrons, it becomes a Definition positive ion Term the unit of electric current is Definition ampere Term The unit of resistance is the Definition Ohm Ω Term One ampere of current corresponds to (an equation) Definition 1C/1s Term Conventional current is considered Definition The motion of positive charges in the opposite direction of electron flow. Term In a circuit the opposition to the flow of current is called the Definition resistance Term The nucleus of an atom is made up of Definition protons and neutrons Term When the polarity of applied voltage reverses, the direction of current flow also reverses. True or False Definition True Term A battery is a dc voltage source because it cannot reverse the polarity across its output terminals. True or False Definition True