Current through a circuit with switches

  • Thread starter Physics197
  • Start date
  • #1
73
0

Homework Statement


http://i.imagehost.org/view/0578/bulbsb [Broken]
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:

Answers and Replies

  • #2
2,011
288
It seems you exchanged S2 and S3. (or questions 2 and 4). The rest is Ok.
 

Related Threads on Current through a circuit with switches

Replies
8
Views
1K
Replies
1
Views
4K
Replies
4
Views
1K
Replies
3
Views
1K
Replies
5
Views
6K
  • Last Post
Replies
1
Views
720
  • Last Post
Replies
5
Views
3K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
3
Views
2K
Top