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# 1.1 Part A Vocab

### Engineering

TermDefinitionExample Sentence
Breadboard A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work. We need to connect the LED and resistors to the breadboard
Conventional Circuit The direction of current flow associated 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. Conventional Circuits and Electron Flows have many differences
Current A movement of electrical charges around a closed path or circuit The current flowing through this circuit is dangerously high
Digital A way of representing a physical quantity by a series of binary numbers. A digital representation can have only specific discrete values. The clock on my phone is "digital"
Digital Multi-Meter (DMM) A piece of test equipment used to measure voltage, current, and resistance in an electronic circuit. We use the digital multi-meter to make sure there are no dangerous currents flowing
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 Writing in Engineering Notation makes it faster and shorter to write large/small numbers that contains lots of zero's
Kirchhoff's Current Law (KCL) The algebraic sum of all currents into and out of any branch point in a circuit must equal zero. Using Kirchhoff's current law, I now know that all the currents are the same in a Parallel Circuit
Kirchhoff's Voltage Law (KVL) The algebraic sum of all voltages around any closed path must equal zero. Using Kirchhoff's Voltage Law, I now know that all the voltages in a series circuit are the same
LED Light-emitting diode. An electronic device tat conducts current in one direction only and illuminates when it is conducting This Christmas tree has LED lights to make the tree look colorful
Ohm Unit of resistance. Value of one ohm allow current of one ampere with potential difference of one volt. This light bulb contains 4 ohms
Ohm's Law In electric circuits, I=V/R Ohm's Law is used to help solve for missing information in circuits
Parallel Circuit One that has two or more branches for separate current from one voltage source Usually hallway lights use parallel circuits to make sure they are all powered evenly throughout the hallways
Resistance Opposition to current. Unit is the Ohm This light bulb has a very high resistance
Resistance Color Code Coding system of colored stripes on a resistor to indicate the resistor's value and tolerance This resistor has green first and red next as the Resistance color code
Scientific Notation Numbers entered as a number from one to ten multiplied by a power of ten When we are talking about large/ really small numbers, we would use scientific notation to shorten the length of the number written
Series Circuit One that has only one path current A series circuit is sometimes used in Christmas tree lights
SI Notation Abbreviation of System International, a system of practical units based on the meter, kilogram, second, ampere, Kelvin, mole, and candela Our teacher wants us to make sure we put all of our answers in with SI notation
Solder Metallic alloy of tin and lead that is used to join two metal surfaces The resistor is coming off the motherboard. I need to solder it to get the connection working again
Soldering Process of joining two metallic surfaces to make an electrical contact by melting solder (usually tin and lead) across them Soldering takes time and practice to get right. It is a slow process and must be done carefully
Soldering Iron Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten I need to use the soldering iron to connect the resistor to the motherboard
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. The school clock on the walls are "analog"
Created by: Michael Quach

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