Electromagnets
9 months ago
nantonk
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10 QuestionsShow answers
  • Question 1
    30 seconds
    Q.

    When _______________ travels through a

    conductor, a magnetic field is created

    answer choices

    current

    a magnetic field

    neutrons

  • Question 2
    30 seconds
    Q.

    Electric currents produce _____________

    answer choices

    electron clouds

    magnetic fields

    sound waves

  • Question 3
    30 seconds
    Q.

    In magnets and electromagnets, similar poles attract

    answer choices

    true

    false

  • Question 4
    30 seconds
    Q.

    In magnets and electromagnets, dissimilar (opposite) poles attract

    answer choices

    true

    false

  • Question 5
    30 seconds
    Q.

    The object inside a radio that makes a speaker work is called a(n) ______________________

    answer choices

    electromagnet

    permanent magnet

    electron cloud

  • Question 6
    30 seconds
    Q.

    In a battery, electrons collect at the __________________ end of the battery.

    answer choices

    positive

    middle

    negative

  • Question 7
    30 seconds
    Q.

    Electrons which collect at the negative end of the battery, can flow to the positive end through a ___________________

    answer choices

    wire

    electron cloud

    magnet

  • Question 8
    30 seconds
    Q.

    When the strength of the magnetic field changes, the ________________________between the coil and the permanent magnet changes.

    answer choices

    attractive force

    polarity

    wire

  • Question 9
    30 seconds
    Q.

    A magnet is defined as

    answer choices

    the force between two opposite poles

    any material that has a magnetic field

    the electron cloud surrounding an object

  • Question 10
    30 seconds
    Q.

    How can the strength of an electromagnet be increased? (mark all that apply)

    answer choices

    increase the current flowing through the coil

    increase the number of coils

    add an amplifier to it

    put iron core inside the coil

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