Answers to Physics Module Questions - Module #28

  1. Double the amplitude of a wave and you necessarily change its
    1. wavelength
    2. frequency
    3. speed
    4. color
    5. taste
    6. none of the above
    7. all of the above

  2. Charge carriers in a metal are not protons because protons are
    1. neutral
    2. positively charged
    3. negatively charged
    4. introverts
    5. not very socially inclined
    6. tightly bound

  3. Connect three light-bulbs in parallel with a battery and you draw a certain amount of current. Connect the three light-bulbs in series with the same battery and you draw ____ current.
    1. the same
    2. more
    3. less
    4. zero
    5. infinite
    6. none of the above
    7. all of the above

  4. A steady magnetic field runs from top to bottom of this page. An electron is moving from bottom to top of this page. The force on the electron, exerted by the magnetic field, is
    1. in the same direction as the electron's motion
    2. in the opposite direction as the electron's motion
    3. from left to right on this page
    4. from right to left on this page
    5. perpendicular to the plan of this page
    6. zero
    7. infinite
    8. none of the above

  5. A proton vibrates from side-to-side 10 times a second. It generates an electromagnetic field with a frequency of
    1. 1 Hz
    2. 2 Hz
    3. 10 Hz
    4. 100 Hz
    5. 10 meters
    6. 100 meters
    7. 10 meters/second
    8. 100 meters/second

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