- #1

meguco0314

- 11

- 1

## Homework Statement

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What is the current between points A and B?

The current I is unknown.

The voltage is 12V.

R1 = 3 Ohm

R2 = 6 Ohm

R3 = R4 = 4 Ohm

## Homework Equations

U= R*I

## The Attempt at a Solution

Total resistance from both branches:

1/R = 1/(R_1+R_3) + 1/(R_2+R_4)

1/R = 1/7 + 1/10

R = 1/(1/7 + 1/10) = 1/17/70 = 70/17 Ohm

Total current from both branches:

I = U/R = 12/(70/17) = 72/35 A

Here I get lost. Even If I can calculate the current that goes through each resistance (which I don't know how to do.) I don't know how I should determine how much current that goes from point A to B and/or vice versa.