Item RG215001: If a battery and a light bulb are connected in a complete circuit, energy can be transferred. If the battery and light bulb are not connected in a complete circuit, energy cannot be transferred.
A student tries two different ways of connecting a battery to a light bulb as shown in the figures below.
In which figure will energy be transferred from the battery to the light bulb causing the light bulb light up? Why?
- In both figures, because in both figures the battery and the light bulb are connected to each other, and energy is transferred from a battery to a light bulb as long as they are connected in some way.
- In figure 1 only, because there is one path from the battery to the light bulb so energy starts in the battery and is transferred along the path of the wire to the light bulb. In figure 2, there is no endpoint to receive the energy so energy is not transferred from the battery to the light bulb.
- In figure 2 only, because the battery and light bulb are connected in a complete circuit, and a complete circuit is needed to transfer energy electrically. In figure 1, the battery and light bulb are not connected in a complete circuit so energy is not transferred.
- In neither figure, because energy cannot be transferred from a battery to a light bulb unless they are part of a device like a flashlight or lamp.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 467
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 298 | 497 | 60% |
Grades | |||
4–5 | 26 | 81 | 32% |
6–8 | 109 | 184 | 59% |
9–12 | 163 | 232 | 70% |
Gender | |||
Male | 158 | 255 | 62% |
Female | 138 | 238 | 58% |
Primary Language | |||
English | 292 | 486 | 60% |
Other | N/A | N/A | N/A% |