Current through a circuit with switches

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SUMMARY

The discussion focuses on analyzing the current flow through a circuit with multiple switches and bulbs. When all switches are closed and switch 1 is opened, the current through bulb 1 increases as it no longer splits with bulbs 2 and 3. Opening switch 2 does not affect bulb 1's current, which remains the same. However, when switch 1 is opened again, the current through bulb 1 increases, as all current must then flow through it and bulb 5. The final opening of switch 3 also results in an increase in current through bulb 1.

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Homework Statement


http://i.imagehost.org/view/0578/bulbsb
Consider the current flowing through bulb 1. In each situation, does the current through bulb 1 increase, decrease, or stay the same.

1. All switches are closed, then switch 1 is opened.
2. All switches are closed, then switch 2 is opened.
3. Then switch 1 is also opened.
4. Finally, switch 3 is opened as well.

Homework Equations



I = V/R

The Attempt at a Solution



1. Increase - rather than splitting the current between bulbs 1 and 2/3, all of the current can go through 1.
2. stay the same? - this would only increase bulb 6?
3. Increase - similar to 1
4. increase - all the current must go through bulb 1 and 5 now
 
Last edited by a moderator:
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It seems you exchanged S2 and S3. (or questions 2 and 4). The rest is Ok.
 

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