Electrical Sciences Basic

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Author:
ereim
ID:
29412
Filename:
Electrical Sciences Basic
Updated:
2010-08-11 11:12:28
Tags:
Basic Electric Theory
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Basic
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  1. Consists of a positively charged nucleus surrounded by negatively charged electrons
    Atom
  2. The ability to store an electric charge
    Capacitance
  3. The measure of an ability to conduct current
    Conductance
  4. Materials with electrons that are loosely bound to their atoms, or materials that permit free motion of a large number of electrons
    Conductors
  5. The movement or flow of electrons. Also called electron current flow
    Current
  6. A special force acting between the charged electron and proton
    Electrostatic field
  7. The force that causes the electron and the nucleus to attract each other, and holds the atom together
    Electrostatic force
  8. The negative charge of the electron is equal, but opposite to, the positive charge of the proton
    First law of electrostatics
  9. Valence electrons that leave the atom if enough energy is applied to the atom
    Free electrons
  10. A theoretical concept of an electric current or voltage supply that has no losses and is a perfect voltage or current supply
    Ideal source
  11. The ability of a coil to store energy, induce a voltage in itself, and oppose changes in current flowing through it
    Inductance
  12. Materials with electrons that are tightly bound to their atoms and require large amounts of energy to free them from the influence of the nucleus
    Insulators
  13. Applied voltage equals circuit current times the circuit resistance
    Ohm’s law
  14. How large the electrostatic force is between two charged objects
    Potential difference
  15. The rate at which work is done, or the rate at which heat is generated
    Power
  16. A real life current or voltage supply that has some losses associated with it
    Real source
  17. The opposition to current flow
    Resistance
  18. Materials that conduct electricity but offer opposition to current flow
    Resistors
  19. Basic unit of measure for potential difference. The pressure or force that causes electrons to move in a conductor. Also called electromotive force (EMF).
    Voltage (V)
  20. Given any two of the three component values of Ohm’s Law, DETERMINE the unknown component value

    • R I V P
    • Resistance x Current = Voltage
    • Current x Voltage = Power
  21. The sum of the potential differences of all charged particles in the electrostatic field
    Electromotive force (EMF)
  22. An atom that has lost or gained one or more electrons is said to have an
    Ion Charge

  23. Dash Line in drawing
    Conventional Flow
  24. Flow of electrons from negative to positive.
    Electron Flow
    • a. Direct Current
    • b. Alternating Current
  25. The opposition to alternating current flow
    Impedance

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