What is the current that runs through the circuit below:

 

If this is homework, we're not just going to do it for you. Have you tried to solve it? Where did you get stuck?

Use one of Kirchoff's laws to solve it. I can't look it up properly now, but you might or might not have to apply it to all points where the currents would "meet".

 

http://www.tpub.com/doeelecscience/electricalscience261.htm

This is a basic Ohm's Law problem. Show us what you've done so far and we'll give you some hints if you need them.

10-5-6-7 = 6 I + 8 I + 1 I +3 I + 4I + 2I

 

-8 = 24 I

 

-8/24

 

= -0,333333333 I

1 pick a direction and pick a start finish point

2 If you go through a battery -ve to +ve (small side to big side) add the EMF if you go through +ve to -ve subtract the EMF

3 If you go through a resistor add IR

4. that equation should equal zero (you are back to the same point from where you started from so there can be no overall difference in voltage) - solve for I. If I is negative it goes in the opposite direction to that whcih you chose, if positive it goes in the same direction

 

 

Seem a bit long-winded but it avoids putting the wrong sign on a EMF (hint). And it works for circuits with more than one loop - with a little bit of extra effort

Edited April 8, 201312 yr by imatfaal
sign mistake