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Item RG145002: A device cannot power itself because some energy will be transferred to the surrounding environment, and that energy will no longer be available to be used by the device.

An inventor has an idea to have a light bulb power itself. She finds a light panel, which is a device that absorbs light and uses that light to produce electricity. She connects the light bulb to the light panel in a complete circuit. She turns the other lights in the room off so that the light bulb is the only source of light.

Her idea is that the light panel will capture light from the light bulb and produce electricity to keep the light bulb lit. Will her idea work?

  1. Yes, but only if she uses a separate power source to begin the process because all processes require an input of energy to start
  2. Yes, but only if the panel completely surrounds the light bulb so that the panel can absorb all of the light given off by the bulb
  3. No, some energy will be transferred to the surrounding environment, and that energy will no longer be available to be used by the light bulb or panel.
  4. No, some energy will be destroyed during the process, so there will eventually not be enough energy for the light bulb to work.
Distribution of Responses
Chart showing distrubtion of responses for Item EG145002
Scale Score for Item Difficulty
(200[Easy]-800[Difficult])
535
Students Responding Correctly
Group Correct Total Percent
Overall 1089 4296 25%
Grades
  4–514079118%
  6–8 373 1770 21%
  9–12 576 1735 33%
Gender
  Male522192327%
  Female536224224%
Primary Language
  English970384325%
  Other8330727%

View data table