Testing electric circuits worksheet - Free Printable

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To determine whether the bulbs will light in the given circuits, we need to analyze each circuit based on the principles of electric circuits. Specifically, we need to check if there is a complete path (closed loop) for current to flow through the bulb(s). Here's the step-by-step analysis for each circuit:

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Circuit 1:

- Description: A battery connected directly to a bulb.
- Analysis: There is a complete path for current to flow from the positive terminal of the battery, through the bulb, and back to the negative terminal.
- Conclusion: The bulb will light.
- Answer: Yes

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Circuit 2:

- Description: Two batteries connected in series with two bulbs in parallel.
- Analysis: Both bulbs are connected in parallel across the combined voltage of the two batteries. Each bulb has a complete path for current to flow.
- Conclusion: Both bulbs will light.
- Answer: Yes

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Circuit 3:

- Description: A single bulb connected to an open switch.
- Analysis: The switch is open, which breaks the circuit. There is no complete path for current to flow through the bulb.
- Conclusion: The bulb will not light.
- Answer: No

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Circuit 4:

- Description: A battery connected to a bulb with a closed switch.
- Analysis: The switch is closed, providing a complete path for current to flow from the battery through the bulb and back to the battery.
- Conclusion: The bulb will light.
- Answer: Yes

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Circuit 5:

- Description: A battery connected to a bulb with an open switch.
- Analysis: The switch is open, breaking the circuit. There is no complete path for current to flow through the bulb.
- Conclusion: The bulb will not light.
- Answer: No

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Circuit 6:

Circuit 7:

Circuit 8:

Circuit 9:

- Description: Two batteries connected in series with two bulbs in series.
- Analysis: The bulbs are connected in series, meaning the current must pass through both bulbs to complete the circuit. Since the circuit is closed, current will flow through both bulbs.
- Conclusion: Both bulbs will light.
- Answer: Yes

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Circuit 10:

Final Answers:

1. Yes
2. Yes
3. No
4. Yes
5. No
6. Yes
7. No
8. Yes
9. Yes
10. No

Boxed Final Answer:
\[
\boxed{\text{Yes, Yes, No, Yes, No, Yes, No, Yes, Yes, No}}
\]

Parent Tip: Review the logic above to help your child master the concept of electrical circuit worksheet.

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