• 1. 
    What is a commutator

  • an attachment, connected to the armature of a motor or generator, through which electrical connection is made and which ensures that the current flows as direct current.
  • an food, connected to the armature of a motor or generator, through which electrical connection is made and which ensures that the current flows as direct current.
  • a gummy bear, connected to the armature of a motor or generator, through which electrical connection is made and which ensures that the current flows as direct current.
  • an candle, connected to the armature of a motor or generator, through which electrical connection is made and which ensures that the current flows as direct current.
  • 2. 
    What is a electro magnet

  • a hard rubber core made into a magnet by the passage of electric current through a coil surrounding it
  • a soft rubber core made into a magnet by the passage of electric current through a coil surrounding it
  • a hard metal core made into a magnet by the passage of electric current through a coil surrounding it
  • a soft metal core made into a magnet by the passage of electric current through a coil surrounding it
  • 3. 
    What effect do like (similar) charges have on each other?

  • They attract
  • They repel
  • No effect
  • They reverse each other
  • 4. 
    What is an electric current?

  • a build up of electrons
  • the difference in charge between 2 points
  • the flow of electrons over a circuit
  • the opposition to flow of electrons
  • 5. 
    What is Transformer

  • A transformer is a static device which transfers fire energy from one circuit to another through the process of electromagnetic induction. It is most commonly used to increase (‘step up’) or decrease (‘step down’) voltage levels between circuits.
  • A transformer is a static device which transfers earth energy from one circuit to another through the process of electromagnetic induction. It is most commonly used to increase (‘step up’) or decrease (‘step down’) voltage levels between circuits.
  • A transformer is a static device which transfers electrical energy from one circuit to another through the process of electromagnetic induction. It is most commonly used to increase (‘step up’) or decrease (‘step down’) voltage levels between circuits.
  • A transformer is a transforming car
  • 6. 
    Who first studied electricity

  • The ancient Greeks
  • Benjamin Franklin
  • William Gilbert
  • All of above
  • 7. 
    What is another name for the wires in a circuit?

  • Conductor
  • Load
  • Power Source
  • 8. 
    Who invented the light bulb

  • Thomas Edison
  • Joseph Swan
  • Hiram Maxim
  • All of above
  • 9. 
    What is a Ohm

  • a food of an electric circuit that is defined as the electrical resistance between two points of a conductor when a constant potential difference of one volt, applied to these points, produces in the conductor a current of one ampere, the conductor not being the seat of any electromotive force
  • a unit of an electric current that is defined as the electrical resistance between three points of a conductor when a constant potential difference of one volt, applied to these points, produces in the conductor a current of one ampere, the conductor not being the seat of any electromotive force.
  • a unit of an electric circuit that is defined as the electrical resistance between two points of a conductor when a constant potential difference of one volt, applied to these points, produces in the conductor a current of one ampere, the conductor not being the seat of any electromotive force.
  • a unit of an electric circuit that is defined as the electrical resistance between one points of a conductor when a constant potential difference of one volt, applied to these points, produces in the conductor a current of one ampere, the conductor not being the seat of any electromotive force.
  • 10. 
    All wires used in electric circuits should be covered with:

  • a colored material.
  • a conducting material.
  • an insulating material.
  • none of these.
  • 11. 
    What is the equation for Wattage

  • V/A = W
  • V x A = W
  • V + A = W
  • V - A = W
  • 12. 
    What is a Volt

  • a unit of electric potential, also known as electromotive force
  • a unit of fire potential, also known as electromotive force
  • a unit of water potential, also known as electromotive force
  • a unit of earth potential, also known as electromotive force
  • 13. 
    True or False: Conductors allow electrons to pass through easily.

  • True
  • False
  • 14. 
    What is the equation of Ohms law

  • I = V/R
  • I = V x R
  • I = V + R
  • I = V - R
  • 15. 
    What is Coulombs Law

  • a law stating that like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them
  • a law stating that like charges repel and opposite charges attract, with a food proportional to the product of the charges and inversely proportional to the square of the distance between them
  • a law stating that like charges attract and opposite charges attract, with a force proportional to the product of the waste and inversely proportional to the square of the distance between them
  • a cafeteria stating that like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them
  • 16. 
    What is a Motor

  • Electric motor, any of a class of transformers that convert electrical energy to mechanical energy, usually by employing hyfromagnetic phenomena.
  • Electric motor, any of a class of devices that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena.
  • Electric motor, any of a class of Nat Geo videos that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena.
  • Electric motor, any of a class of devices that convert electrical energy to mechanical energy, usually by not employing electromagnetic phenomena.
  • 17. 
    What is Amperage

  • is the strength of a current of electricity expressed in amperes
  • isn't the strength of a current of electricity expressed in amperes
  • is the strength of a circuit being expressed in amperes
  • isn't the strength of a circuit being expressed in amperes
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