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Magic of Electrons - End of Unit

Quiz by Megan McMillen

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28 questions
Show answers
  • Q1
    Which of the following statements most accurately compares a motor and a generator?
    A generator converts electrical energy into mechanical energy and a motor converts mechanical energy into electrical energy
    A motor needs electricity to turn and a generator produces electrical energy when turned
    A motor produces chemical energy (stored in a battery) and a generator produces mechanical energy
    A motor and a generator perform the same function
    60s
  • Q2
    Which of the following best explains the flow of electricity?
    Renegade neutrons continuously displace protons within the nucleus of atoms causing the charge of each atom to switch from positive to negative
    A proton collides with an electron in an atom and pushes the electron from its orbit to the next higher orbit creating a chain reaction
    A proton moves from the nucleus of one atom to another, changing the atoms charge and attracting electrons from surrounding atoms
    An electron from another atom collides with a valence electron and pushes the valence electron to another atom
    60s
  • Q3
    When building a circuit, a diode would accomplish which of the following functions?
    Limit or restrict the flow of electricity
    Allow the manual connection or disconnection of a component or circuit
    Permit current to flow through it in only one direction
    Change resistance with a change in light intensity
    60s
  • Q4
    Which of the following best explains why, in the combination circuit, the two bulbs to the left are dimmer than the bulb at the bottom of the image?
    Question Image
    The bulbs are not working properly
    The resistance of each of the dimmer bulbs is greater than the resistance of the bottom bulb
    Each of the two bulbs on the left have a lower current flow than the bulb at the bottom
    The current is lost as it flows through the bulb on the bottom before it reaches the bulbs on the left
    120s
  • Q5
    Use the chart to convert the binary number 1011010100 to a decimal number.
    Question Image
    724
    965
    512
    299
    120s
  • Q6
    The rotating part of an electrical generator.
    armature
    30s
  • Q7
    A device used to convert chemical energy into electric energy.
    battery
    30s
  • Q8
    An electrical path between two points.
    circuit
    30s
  • Q9
    A device or material that permits current to flow through it easily.
    conductor
    30s
  • Q10
    The continuous flow through a component or an entire circuit.
    continuity
    30s
  • Q11
    A flow of electric charge.
    current
    30s
  • Q12
    Current that does not reverse its direction of flow
    direct current
    30s
  • Q13
    Magnet created by passing a current through a coil of wire.
    electromagnet
    30s
  • Q14
    A negatively charged particle.
    electron
    30s
  • Q15
    A device used to convert electric energy into mechanical energy.
    motor
    30s

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