Card Set Information

2012-10-30 20:34:38

Show Answers:

  1. What is a electric circuit?
    An electric circuit is a closed path along which electrons that are powered by an energy source can flow.
  2. What is a volatic cell?
    This is a source of energy that generates an electric currunt by chemical reactions involving two different metals or metal compounds seperated by a conducting soloution.
  3. What is a battery?
    A battery is a connection of two or more cells.
  4. What is an electrode?
    This is one of two metal terminals in a cell or battery.
  5. What is an electrolyte?
    An electrolyte is a soloution or paste that conducts charge.
  6. What is a dry cell?
    A dry cell is a cell that contains an electrolyte made of plastic.
  7. What is a wet cell?
    A wet cell is a cell that contains a liquid electrolyte.
  8. What is a primary cell?
    A primary cell is a cell that can only be used once like a normal battery.
  9. WHat is a secondary cell?
    A secondary cell is a source that can be charged, like a rechargable battery.
  10. What is a fuel cell?
    A fuel cell is a cell that can generate electricity through chemical reactions of fuel that is stored outside the cell.
  11. What is a solar cell?
    A solar cell is is a cell that converts sunlight into electrical energy, like solar panels.
  12. What is a terminal?
    A terminal is a position on a cell that must be connected to other components to form a circuit.
  13. What is a switch?
    A switch is a control device that can complete or break the circuit to which it is controlled.
  14. What is a open circuit?
    An open circuit is a circuit that cotains a gap or break.
  15. What is an electric currunt?
    A mesure of the number of charged particals that pass by a point in an electric circuit each second.
  16. What is a coulomb (C)?
    A coulomb (C) is the quantity of charge that is equel to the charge of 6.25 x 10 (to the power of 18) electrons.
  17. What is an Amphere (A)?
    This is the unit of electrical crrunt equivilent to one coulomb per second.
  18. What is Electrical resistance?
    Electrical resistance is the property of a substance that hinders electric currunt and converts electrical energy into other forms of energy.
  19. What is a resistor?
    A resistor is a device used in an electric circuit to decrease the currunt through a component by a specifc amount.
  20. What is a load?
    • A load is a resistor or any other device that transofrms electrical energy into heat, motion, sound or light.
    • One load is a light bulb.
  21. What is potential difference (Voltage)?
    This is the difference between the electrical potential energy per unit of charge at two points in a circuit.
  22. What is a Volt?
    This is the unit for potential difference equivilent to one joule (J) per couloumb (C).
  23. What is a Circuit Diagram?
    This is a diagram that uses standard symbols to reprensent the components in an electric circuit and their connections.
  24. What is a series circuit?
    This is a circuit along which electrons an flow only one direction.
  25. What is a parallel circuit?
    This is a circuit along which electrons can take 2 or more different paths.
  26. What is Ohm’s law?
    This is the ratio of potential difference to currunt which is a constant called a resistance.
  27. What is an Ohm (Ω)?
    The unit of resistance equivilent to one volt per ampere (V/A)
  28. What is a super conducter?
    A material in which electric charge can flow through without resistance.
  29. What does Non-Ohmic mean?
    Not following Ohm's Law.
  30. What does it mean to have loads in series?
    Loads in series means that all the loads are in the same circuit path.
  31. What does it mean to have loads in parallel?
    Loads in parallel is when not all loads are on the same circuit path.