To determine whether each circuit is
open or
closed, we need to analyze the flow of current in each diagram. A
closed circuit allows current to flow continuously from the power source (battery) through the components and back to the power source. An
open circuit has at least one break in the path, preventing current from flowing.
Let's analyze each circuit step by step:
---
1)
- The circuit contains a battery, two bulbs, and two switches.
- Both switches are closed (indicated by the solid line connecting the switch contacts).
- Current can flow from the battery, through the first bulb, the second bulb, and back to the battery.
-
Conclusion: This is a
closed circuit.
---
2)
- The circuit contains a battery, a bulb, and a switch.
- The switch is open (indicated by the gap between the switch contacts).
- Current cannot flow because there is a break in the path.
-
Conclusion: This is an
open circuit.
---
3)
- The circuit contains a battery, two bulbs, and three switches.
- All three switches are closed (solid lines connecting the switch contacts).
- Current can flow from the battery, through both bulbs, and back to the battery.
-
Conclusion: This is a
closed circuit.
---
4)
- The circuit contains a battery, a bulb, and two switches.
- One switch is closed, but the other switch is open (gap in the path).
- Current cannot flow because there is a break in the path.
-
Conclusion: This is an
open circuit.
---
5)
- The circuit contains a battery, three bulbs, and two switches.
- Both switches are closed (solid lines connecting the switch contacts).
- Current can flow from the battery, through all three bulbs, and back to the battery.
-
Conclusion: This is a
closed circuit.
---
6)
- The circuit contains a battery, two bulbs, and two parallel paths with switches.
- One switch is closed, allowing current to flow through one bulb.
- The other switch is open, breaking the path for the second bulb.
- However, since one complete path is still available, current can flow through the closed switch and one bulb.
-
Conclusion: This is a
closed circuit.
---
Final Answers:
1.
Closed
2.
Open
3.
Closed
4.
Open
5.
Closed
6.
Closed
$$
\boxed{\text{Closed, Open, Closed, Open, Closed, Closed}}
$$
Parent Tip: Review the logic above to help your child master the concept of open and closed circuit worksheet.
