To solve the problem, we need to analyze each circuit diagram and determine whether the bulb will light up or not. A bulb will light up if there is a complete, closed path for current to flow through it. Let's go through each circuit step by step.
---
Circuit 1 (Top Left)
-
Diagram: Two bulbs in series with a battery.
-
Analysis:
- The two bulbs are connected in series, meaning the current must pass through both bulbs to complete the circuit.
- There is a continuous path from the positive terminal of the battery, through both bulbs, and back to the negative terminal.
-
Conclusion: The bulb will light up.
-
Mark:
✔
---
Circuit 2 (Top Right)
-
Diagram: One bulb with a switch and a battery.
-
Analysis:
- The switch is open, which means there is no complete path for current to flow.
- Current cannot reach the bulb because the circuit is broken at the switch.
-
Conclusion: The bulb will not light up.
-
Mark:
✘
---
Circuit 3 (Middle Left)
-
Diagram: Two bulbs in parallel with a battery.
-
Analysis:
- The two bulbs are connected in parallel, meaning each bulb has its own separate path to the battery.
- Both paths are complete, allowing current to flow through each bulb independently.
-
Conclusion: The bulb will light up.
-
Mark:
✔
---
Circuit 4 (Middle Right)
-
Diagram: One bulb with a motor and a battery.
-
Analysis:
- The motor and the bulb are connected in series.
- There is a continuous path from the positive terminal of the battery, through the motor, through the bulb, and back to the negative terminal.
-
Conclusion: The bulb will light up.
-
Mark:
✔
---
Circuit 5 (Bottom Left)
-
Diagram: One bulb with a battery but no connection to the negative terminal.
-
Analysis:
- The bulb is connected to the positive terminal of the battery, but there is no connection to the negative terminal.
- This means the circuit is incomplete, and current cannot flow through the bulb.
-
Conclusion: The bulb will not light up.
-
Mark:
✘
---
Circuit 6 (Bottom Right)
-
Diagram: One bulb with a motor and a battery, but the motor is disconnected.
-
Analysis:
- The motor is disconnected, so it does not affect the circuit.
- The bulb is directly connected to the battery with a complete path from the positive terminal, through the bulb, and back to the negative terminal.
-
Conclusion: The bulb will light up.
-
Mark:
✔
---
Final Answer
- Top Left:
✔
- Top Right:
✘
- Middle Left:
✔
- Middle Right:
✔
- Bottom Left:
✘
- Bottom Right:
✔
Boxed Final Answer:
\[
\boxed{\begin{array}{cc}
\text{Top Left: } \checkmark & \text{Top Right: } \times \\
\text{Middle Left: } \checkmark & \text{Middle Right: } \checkmark \\
\text{Bottom Left: } \times & \text{Bottom Right: } \checkmark \\
\end{array}}
\]
Parent Tip: Review the logic above to help your child master the concept of basic circuits worksheet.
