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# unit 1.1 partA

### vocabulary

TermDefinitionExample Sentence
Breadboard A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work. He needed a breadboard for his prototype.
Conventional Current the direction of current flow associate with positive charge in motion. The current flow direction is from a positive to negative potential, which is in the opposite direction of electron flow. She knew what conventional current was.
Current a movement of electrical charges around a closed path or circuit. He checked the current.
Digital A way of representing a physical quantity by series of binary numbers. A digital representation can have only specific discrete values. My sister got me a digital watch.
Digital Multi-mater a piece of test equipment used to measure voltage, current, and resistance in an electronic circuit. The worker needed the digital multi-mater to measure the voltage.
Engineering notation A floating point system in which numbers are expressed as products consisting of a number greater than one multiplied by an appropriate power of ten that is some multiple of three. She didn't really understand engineering notation.
Kirchhoff's current law The algebraic sum of all curents into and out of any branch point in a circuit must equal zero. Marcos understood Kirchhoof's currents law.
Kirchhoff's Voltage Law The algebraic sum of all voltages around any closed path must equal zero. Kim knew that in Kirchhoof's voltage law any closed path had to equal to zero.
LED Light-emitting diode. An electronic devise that conducts current in one direction only and illuminates when its conducting.
ohm unit of resistence. Value of one ohm allow current of one ampere with potential of one volt. Students in physics know ohm unit.
ohm's law in electric circuits, I=V/R. Ohm's law is easy to undersand.
Parallel circuit one that has two or more branches for separete current from one voltage source. Emy explained to her classroom what a parallel circuit was.
Resistance Opposition to current. Unit is the ohm.
resistor color code coding system of colored stripes on a resistor to indicate the resistor's value and tolerance. He founded hard to dp the resistor color code.
scientific Notation Numbers entered as a number from one to ten multiplied by a power of ten. He knew what scientific notation
Series Circuit one that has only one path current. Noah new that the series circuit only one path.
SI Notation Abbrevation of system International, a system of practical units based on the meter,kiligram, second, ampere, Kelvin, mole and candela.
Solder Metallic alloy of tin and lead that is used to join two metal surface. Many workers use solders.
Soldering Process of joining two metallic surfaces to make an electrical contact by melting solder across them. He constructers use soldering.
Soldering Iron Tool with an interial heating element used to heat surfaces being soldered to the point where the solder becomes molten.
Analog A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current. an analog voltage or current can have any value within a defined range. He didn't really understand what analog was.
Created by: maryine