# Finding current in a resistor (in a big circuit)

1. May 13, 2007

### notsuchawizkid

hi,

can anyone help me with this problem? i need to try find the current in the
50ohm resistor marked with an 'x'.

any help would be greatly appreciated!

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2. May 14, 2007

### Staff: Mentor

What are the relevant equations for finding that current?

3. May 14, 2007

### notsuchawizkid

i think it is supposed to be done my using norton and thevenin equivelent circuits or possibly node analysis? and then applying ohms law...

i do appreciate any help at all

thanks!

4. May 14, 2007

### Staff: Mentor

Yes, I would use node analysis in the form of Kirchoff's Current Law to solve this problem. What can you tell us about how to apply the KCL? We do not give out answers here on the PF, but we can help to point you in the right direction.

5. May 16, 2007

### notsuchawizkid

main point with KCL is that current into a node equals current out.I had another go at the problem with node analysis, and i got 0.15A approx, i think its right, can any1 confirm this