- #1

- 146

- 0

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter map7s
- Start date

- #1

- 146

- 0

- #2

ranger

Gold Member

- 1,680

- 1

- #3

- 146

- 0

What is the current divider rule?

- #4

ranger

Gold Member

- 1,680

- 1

Its used to find current when resistances are hooked up in parallel with each other. Here is a wiki picture that should clear things up for you:

http://upload.wikimedia.org/wikipedia/en/4/47/Cdr.GIF [Broken]

http://upload.wikimedia.org/wikipedia/en/4/47/Cdr.GIF [Broken]

Last edited by a moderator:

- #5

- 146

- 0

- #6

ranger

Gold Member

- 1,680

- 1

[tex] I_x = \frac{V_s}{R_x}[/tex]

[tex]V_s = I_TR_T[/tex] <--the source voltage is equal to the total current times the total resistance.

Now substituting [itex]I_TR_T[/itex] for V

[tex]I_x = \frac{I_TR_T}{R_x}[/tex]

We can therefore conclude that the current through any parallel resistor is in fact:

[tex]I_x = \frac{R_T}{R_x}\cdot I_T[/tex]

Hope it helps/

Share: