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Electricity and Magnetism

Quiz by LEA FIGUEROA

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25 questions
Show answers
  • Q1
    1. A bar magnet is divided into two pieces. Which of the following statements is true about the force between the broken pieces if they face each other with a small separation?
    There is a magnetic attractive force between the broken pieces.
    There is an electric attractive force between the broken pieces.
    There is a magnetic repulsive force between the broken pieces.
    There is an electric repulsive force between the broken pieces.
    120s
  • Q2
    2. Which statement about the magnetic force of a current carrying wire is FALSE?
    It is exerted over a distance.
    It acts only on materials that are touching a magnet.
    It includes forces of attraction and repulsion.
    It affects only certain types of matter.
    120s
  • Q3
    3. A bar magnet is divided in two pieces. Which of the following statement is true?
    The bar magnet is demagnetized.
    The magnetic poles are separated.
    Two new bar magnets are created.
    The magnetic field of each separated piece becomes stronger
    60s
  • Q4
    4. What will happen to the direction of the compass needle if the current of the current-carrying wire is reversed?
    It will remain unchanged.
    It will deflect in the opposite direction.
    It will continuously rotate in a clockwise direction
    It will continuously rotate in a counter-clockwise direction.
    120s
  • Q5
    5. How will the needle of the galvanometer deflect if the wire is moved downward from the magnetic field?
    It will deflect to the negative.
    It will deflect to the negative and then to the positive.
    It will deflect to the positive.
    It will NOT deflect at all.
    120s
  • Q6
    6. What is referred to as the process of inducing a current in a changing magnetic field?
    Magnetic field
    Electromagnetic Induction
    Magnetism
    Electromagnetism
    60s
  • Q7
    7. Who was the scientist who discovered that changing magnetic field can also produce current?
    Hans Christian Oersted
    William Gilbert
    James Clerk Maxwell
    Michael Faraday
    60s
  • Q8
    8. Which is NOT part of a simple DC motor?
    Galvanometer
    Commutator
    Armature
    Permanent magnet
    60s
  • Q9
    9. A magnet moves into a coil of wire inducing a current in the wire. If the magnet is pulled back out of the coil in the opposite direction as it went into the coil, which of the following will occur?
    The current produced must be stronger than before.
    There will be a current produced in the coil in the opposite direction as before.
    There will be no current produced in the coil.
    There will be a current produced in the coil in the same direction as before.
    120s
  • Q10
    10. A magnet moves into a coil of wire inducing a current in the wire. If the magnet remains stationary in the coil, which of the following will occur?
    There will be a current produced in the coil in the same direction as before.
    There will be no current produced in the coil.
    There will be a current produced in the coil in the opposite direction as before.
    The current produced must be stronger than before.
    120s
  • Q11
    11. Which device converts electrical energy into mechanical energy?
    Electric motor
    Electromagnet
    Transformer
    Generator
    60s
  • Q12
    12. Which is NOT a part of a DC generator?
    armature
    source
    permanent magnet
    commutator
    60s
  • Q13
    13. James Clerk Maxwell, a Scottish physicist is best known for combining the fields of electricity and magnetism to create a theory of the electromagnetic field. Among the tenets of his theory were the following except
    Light exists in the same medium as electric and magnetic phenomena.
    A stationary magnetic field produces an electric field.
    Both the electric fields and the magnetic fields oscillate perpendicular to each other and to the direction of the wave motion.
    Electromagnetic waves travel at the speed of light.
    120s
  • Q14
    14. In which case or cases is electric field present? I. A spark jumping between two nearby rods. II. A charge that is momentarily at rest. III. A rotating bar magnet.
    I, II, and III
    I only
    II and III only
    I and II only
    120s
  • Q15
    15. In which case can a magnetic field be produced?
    A rolling cylinder.
    A charged comb.
    A welder’s arc flash
    A falling glass rod.
    60s

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