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# Unit 1.1 Part A

Term | Definition | Example Sentence |
---|---|---|

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. | I have an analog clock on my wall. |

Breadboard | A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work | I used a breadboard first so that it would be easier to fix a problem f one arises. |

Conventional Current | 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 Current travels from the positive side of the battery to the negative side. |

Current | A movement of electrical charges around a closed path or circuit. | Current is what goes through your body when you touch an open and powered circuit. |

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 resistence in an electronic circuit | The Digital Multi-Meter told me the voltage of the battery was 9V. |

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. | The way to write 365,219 in engineering notation is 365.219*10^3. |

Kichhoff's Current Law (KCL) | The algebraic sum of all currents into and out of any branch point in a circuit must equal zero | KCL is usually associated with parallel circuits. |

Kichhoff's Voltage Law (KVL) | The algebraic sum of all voltages around any closed path must equal zero. | KVL is usually associated with series circuits. |

LED | Light-emitting diode. An electronic device that conducts current in one direction only and illuminates when it is conducting. | When I turn on the switch, the circuit should power the green LED. |

Ohm | Unit of resistance. Value of one ohm allow current of one ampere with potential difference of one volt. | The resistor has a lot of Ohms in it. |

Ohm's Law | In electric circuits, I=V/R. | I calculated the current of the circuit to be 1 mA using Ohm's Law. |

Parallel Circuit | One that has two or more branches for separate current from one voltage source. | Christmas lights with all of the little LEDs is a parallel circuit. |

Resistance | Opposition to current. Unit is the ohm | The more resistance there is, the less current goes trough. |

Resistor Color Code | Coding system of colored stripes on a resistor to indicate the resistor's value and tolerance. | Using the Resistor Color Code, I can tell between the stronger and weaker resistors. |

Scientific Notation | Numbers entered as a number from one to ten multiplied by a power of ten. | Scientific notation is not to be confused with engineering notation. |

Series Circuit | One that has only one path current. | An on and off switch to a light bulb is a series circuit. |

SI Notation | Abbreviation of System International, a system of practical units based on the meter, kilogram, second, ampere, Kelvin, mole,and candela. | The US is the only major country that hasn't adopted the SI Notation. |

Solder | Metallic alloy of tin and lead that is used to join two metal surfaces. | The solder that I used to join these two metal poles together was made of lead. |

Soldering | Process of joining two metallic surfaces to make an electrical contact by melting solder (usually tin and lead) across them. | Using soldering, I joined these two metal poles together. |

Soldering Iron | Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten. | The way that I soldered the two metal poles together was with a soldering iron. |