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5 questions
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  • Q1
    A string of light with small bulbs is shown below. The bulbs are connected by wire that is covered with an insulator. When the lights are on, electricity travels in--
    Question Image
    a sound wave
    an incomplete path
    a complete circuit
    a light ray
    300s
    5.6b
  • Q2
    Which of these changes to the electric circuit shown above will cause the lightbulb to light up?
    Question Image
    Turning one battery so that its positive end connects to the other battery's negative end
    Making the length of wire the same on both sides of the lightbulb
    Straightening the wire so that the current can flow more easily
    Adding a switch and more wire so that the current can flow more easily
    300s
    5.6b
  • Q3
    The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?
    Question Image
    2
    3
    1
    0
    300s
    5.6b
  • Q4
    The diagram shows the metal posts that are usually found on a battery. The battery can be connected to a bell and a switch to produce sound. Which statement best explains why there are two metal posts on the battery?
    Question Image
    One metal post make the bell start to ring, and the other metal post makes the bell ring louder.
    One metal post makes a complete circuit with the switch, and the other metal post makes a complete circuit with the bell.
    The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post.
    The battery needs only one metal post to connect to the bell, but the other metal post is present in case the first post fails to work.
    300s
    5.6b
  • Q5
    Most cars have lights, power locks, radios, and other equipment that use electricity. Electric circuits power this equipment. Each circuit has a fuse that completes it. The picture below shows one type of fuse a car may have. Which of these things describes one thing that could happen if the wire in a car fuse burns out?
    Question Image
    The car's lights will burn brighter.
    The car's radio will not work.
    The car's turn signal will blink too slowly.
    The car's power windows will open faster.
    300s
    5.6b

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