003,004,005 Unit of measurement, related terms, and effects of current flow,voltage, resistance

  1. what unit of measure is current flow measured in?
    Ampere (amps)
  2. what is the symbol for Current?
    (used in math formulas)
    I (intensity)
  3. what is the for current used om drawings?
    A (ampere)
  4. what tool is used to measure current flow?
    ammeter
  5. direction of current flow

    in conventional current flow which way does current flow?
    positive to negative
  6. Effects of Current Flow

    what are the 4 effects of electron flow?
    • heat
    • chemical change
    • magnetism
    • physical shock
  7. Voltage Defined

    what is electromotive force(EMF)?
    the force to move electrons from one atom to another
  8. Voltage Defined

    what are the other names for voltage
    • electrical pressure
    • difference of potential
    • Electromotive force(EMF)
  9. Voltage Defined

    what is the basic unit of measure for electron moving force?
    volt
  10. Voltage Defined

    what is the symbol for voltage when used in math?
    E
  11. Voltage Defined

    what is the symbol for voltage when used in drawings
    V
  12. Voltage Defined

    what tool is used to measure volts
    voltmeter
  13. Resistance Defined

    what is the opposition to current flow?
    resistance
  14. Resistance Defined

    what is resistance measured in?
    ohms
  15. Resistance Defined

    what is the math symbol for resistance?
    R
  16. Resistance Defined

    what is the symbol for resistance in drawings?
    Ω
  17. Factors that affect resistance

    what are the 4 factors that affect resistance
    • length of conductors
    • size of conductor
    • conductor material
    • temperature
  18. Length of Conductors

    T/F
    longer conductors have more resistance
    True
  19. size of conductors

    larger wires have more or less resistance?
    • less
    • bec there is more surface area for current to pass
  20. type of material

    T/F
    the type of material used as a conductor has no effect on the amount of current that can flow thru it
    • False
    • some materials are insulators and some are conductors
  21. Temperature

    what happens to the resistance as the temperature increases?
    the resistance increases
Author
daniel.ramos702
ID
351997
Card Set
003,004,005 Unit of measurement, related terms, and effects of current flow,voltage, resistance
Description
003 Unit of measurement, related terms, and effects of current flow
Updated