# Science Quiz / HCMS Electricity

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## Can you name the terms from electricity?

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Type of very sensitive ammeter/only usable for small currents/always a mechanical device/add a resistor in series to convert into voltmeter
One or more electrochemical cells that convert stored chemical energy into electrical energy
Foundational to electronics/conductivity increases w/increased temp/enhanced by 'doping'/used in transistors/Si,Ga,Ge
Flow of electric charge through a conductor/measured in amperes
Semiconductor device used to amplify & switch electronic signals & power/3 terminals/most important electrical component/developed by Brattain, Shockley, & Bardeen in 1947
Transformer where primary winding has more turns than secondary winding
States that current through conductor is directly proportional to potential difference/current equals potential difference over resistanance/V = I R
2-terminal electrical component/low resistance in 1 direction, high in other so only lets current flow in 1 direction/triangular symbol
Flow of electric charge that periodically reverses direction/Tesla favored this form in War of Currents
Instrument that combines several measurement functions in one unit/normally measures voltage, current, & resistance
Transfers energy between 2 or more circuits by electromagnetic induction/used to increase or decrease voltage of an alternating current
Transformer where primary winding has fewer turns than secondary winding
Instrument used to measure the current in a circuit/can be mechanical or electrical/uses low resistance/must break circuit to insert
Early form of capacitor consisting of a glass jar with layers of metal foil on the outside and inside/invented by von Kleist & Musschenbroek (1745)/named for Dutch city
Enclosure formed by conductive material or mesh of such material that blocks external E-fields and doesn't allow current to flow inside/a car struck by lightning is an example
Property of material that varies with change in temperature that measures how strongly it opposes flow of electric current/reciprocal of conductivity
Instrument that measures electrical potential difference between 2 points in circuit/do not need to break circuit to use/uses high resistance
Measure of the difficulty to pass an electric current through a conductor/measured in ohms
Difference in electric potential energy between two points
Minimum voltage that causes a portion of an insulator to become electrically conductive/for diodes it's the min voltage to make it conduct in reverse
Instrument that measures electrical resistance/form circuit w/in themselves/don't hook into existing circuit/sends constant I thru resistance, measures V to calculate R
Property of material that varies with change in temperature that measures its ability to conduct electric current/reciprocal of resistivity
Used in levitation demos/zero resistance & expulsion of B-field (magnetic field)/discovered by Onnes/usually at very low temps/some ceramic materials at much higher
Flow of electric charge produced by batteries, thermocouples, solar cells, and dynamo-type machines that is unidirectional/favored by Edison in War of Currents
Device that converts mechanical energy into electrical energy for use in an external circuit
Insulating material placed between the plates of a capacitor to increase the amount of charge it can store
Passive two-terminal electrical component that reduces current flow and voltage within a circuit/converts electrical energy to heat/symbolized with jagged lines
Originally known as a condenser/2-terminal component used to store electrical energy (charge)/has 2 plates w/dielectric (insulator) in between/symbol is 2 equal parallel lines
Machine that converts electrical energy into mechanical energy

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Created Apr 2, 2016
Tags:electricity