Science Quiz Chapter 11 Glossary Terms

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Jlawrence
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286819
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Science Quiz Chapter 11 Glossary Terms
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2014-10-24 11:44:16
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Science Physics Electricity Chapter11
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  1. Electric Circuit:
    A closed path along which electrons that are powered by an energy source can flow

    i.e. any closed circuit
  2. Voltaic Cell:
    A source of energy that generates an electric current by chemical reactions involving two different metals or metal compounds separated by a conducting solution

  3. Battery:
    A connection of two or more cells
  4. Electrode:
    One of two metal terminals in a cell or battery
  5. Electrolyte:
    A solution or paste that conducts charge
  6. Dry Cell:
    A cell that contains an electrolyte made of a paste
  7. Wet Cell:
    A cell that contains a liquid electrolyte
  8. Primary Cell:
    A cell that can only be used once

    i.e. a standard "battery"
  9. Secondary Cell:
    A cell that can be recharged
  10. Fuel Cell:
    A cell that generates electricity through the chemical reactions of fuel that is stored outside the cell
  11. Solar Cell:
    A cell that converts sunlight into electrical energy

    i.e. a solar panel
  12. Terminal:
    A position on a cell that must be connected tot other components to form a circuit
  13. Switch:
    A control device that can complete a circuit or break the circuit to which it is connected
  14. Open Circuit:
    A circuit that contains a gap or break
  15. Electric Current:
    A measure of the number of charged particles that pass by a point in an electric circuit each second
  16. Coulomb:
    The quantity of charge equal to that of 6.25x10^18 electrons
  17. Ampere:
    The unit used to measure current. 1 ampere is equal to a flow of 1C/s
  18. Electrical Resistance:
    The property of a substance that hinders electric current and converts electrical energy into other forms of energy
  19. Resistor:
    A device used in an electric circuit to decrease the current through a component by a specific amount
  20. Load:
    A resistor or any other device that transforms electrical energy into hear, motion, sound or light
  21. Potential Difference:
    the difference between the electrical potential energy per unit of charge at two points in a circuit
  22. Volt:
    The unit for potential difference, which is equal to 1J/C
  23. Circuit Diagram:
    A diagram that uses standard symbols to represent the components in an electric circuit and their connections
  24. Series Circuit:
    A circuit where there is only one path for the electrons to flow
  25. Parallel Circuit:
    A circuit where there are multiple paths for the electrons to flow
  26. Ohm's Law:
    The ratio of potential difference to current is a constant called resistance
  27. Ohm:
    The unit for resistance, equivalent to one volt per ampere
  28. Superconductor:
    A device used in an electric circuit to decrease the current through a component by a specific amount
  29. Non-ohmic:
    Not following Ohm's law
  30. Loads in Series:
    • There are certain mathematical equations to describe potential difference, current, and resistance in a series circuit:
    • Current: IT=I1=I2=Ietc.
    • Potential Difference: VT=V1+V2+Vetc
    • Resistance: RT=R1+R2+Retc.
  31. Potential Difference:
    • There are certain mathematical equations to describe potential difference, current, and resistance in a parallel circuit:
    • Current: IT=I1+I2+I3 etc.      
    • Potential Difference: VT=V1+V2+V3 etc.
    • Resistance: RT<R1; RT<R2; RT<R3

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