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10 questions
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  • Q1
    What does electromagnet consist of?
    electric current, metals, switch
    iron core, battery, conductor
    magnet, coil wire, dry cell
    coil, battery, ball pen
    30s
    S5FE-IIIi-j-9
  • Q2
    How can we increase the strength of the magnetic field of an electromagnet?
    add more copper wire to coil
    put more paper clips to pick up
    expose to more light
    clip on the alligator clips
    30s
    S5FE-IIIi-j-9
  • Q3
    Which of the following serves as core of electric current in an electromagnet?
    battery
    copper wire
    thumbtacks
    iron nail
    30s
    S5FE-IIIi-j-9
  • Q4
    Which things at home would have an electromagnet?
    electric fan
    steel cabinet
    gas stove
    ironing stand
    30s
    S5FE-IIIi-j-9
  • Q5
    Which material should we use to construct an electromagnet?
    Use yarn as wire.
    Use a silver spoon as core
    Use abaca rope as wire.
    Use a black crayon as core.
    30s
    S5FE-IIIi-j-9
  • Q6
    What flows through the conductor or copper wire in an electromagnet?
    static electricity
    light waves
    heat energy
    electric current
    30s
    S5FE-IIIi-j-9
  • Q7
    All of these help in strengthening the magnetic field of the electromagnet except one. Which one is it?
    adding more dry cells as source
    coiling more copper wire to the core
    using chopsticks as iron core
    placing a bigger iron nail as core
    30s
    S5FE-IIIi-j-9
  • Q8
    What is a force of attraction or repulsion of magnetic materials due to the management of atoms?
    Magnetism
    Circuit
    Electricity
    Electromagnet
    30s
    S5FE-IIIi-j-9
  • Q9
    The relationship between the strength of an electromagnet and the number of coils is directly proportional. This means that -----
    As the number of coil increases, the strength of the electromagnet increases
    As the number of coil decreases, the strength of the electromagnet increases.
    As the number of coil increases, the strength of the electromagnet decreases.
    As the number of coil increases, the strength of the electromagnet is still the same.
    30s
    S5FE-IIIi-j-9
  • Q10
    Which property of matter do we need in constructing an electromagnet?
    brittleness
    flexibility
    conductivity
    ductility
    30s
    S5FE-IIIi-j-9

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