I'll solve this problem by examining each of the six electric circuits and determining whether the bulb(s) will light or not light based on whether the circuit is open or closed.
Let me analyze each circuit one by one:
Circuit 1:
- This shows a battery connected to a single bulb with wires.
- The circuit appears complete (closed) with no breaks.
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Conclusion: The bulb will light.
Circuit 2:
- This shows a battery connected to a single bulb with wires.
- The circuit appears complete (closed) with no breaks.
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Conclusion: The bulb will light.
Circuit 3:
- This shows a battery connected to two bulbs in series (one after another).
- The circuit appears complete (closed) with no breaks.
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Conclusion: Both bulbs will light.
Circuit 4:
- This shows a battery connected to two bulbs, but there's a gap in the wiring between the battery and one of the bulbs.
- This creates an open circuit.
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Conclusion: Neither bulb will light because the circuit is open.
Circuit 5:
- This shows two batteries connected to two bulbs in parallel (each bulb has its own path back to the batteries).
- The circuit appears complete (closed) with no breaks.
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Conclusion: Both bulbs will light.
Circuit 6:
- This shows two batteries connected to two bulbs in series (one after another).
- The circuit appears complete (closed) with no breaks.
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Conclusion: Both bulbs will light.
The key principle here is that for a bulb to light, there must be a complete, unbroken path (closed circuit) from one terminal of the battery, through the bulb(s), and back to the other terminal of the battery. If there's any break in this path (open circuit), no current can flow and the bulb(s) won't light.
Therefore, the answers are:
1. Will light
2. Will light
3. Will light
4. Will not light
5. Will light
6. Will light
Parent Tip: Review the logic above to help your child master the concept of electricity worksheet 4th grade.
