# How do i find the current in this circuit?

1. Aug 13, 2014

### max1020

i did the question but im not sure if they are right. i wrote my answers on the attachment

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2. Aug 13, 2014

### max1020

is I1 and I3 .22A too because 0.22+0.22+0.22=0.65

3. Aug 13, 2014

### max1020

and can someone please explain how to find the Current if only the resistence and total voltage is given? and im confused on how to identify when some thing is a series or parallel when both are in a circuit together like this?

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4. Aug 14, 2014

### cpscdave

Well the answer here is you have both :) R1 and R2 are in SERIES with one another and they are then in PARALLEL with R3.

Have you learned how to do voltage dividers and current dividers?

A method to solve simple problems like this is to simplify first then solve.
1) take the series resistors and make them into one (eg R4 = R1+R2)
2) take the parallel resistors and make them into one (eg 1/R5 = 1/R4 + 1/R3)
now you are left with a voltage source and a resistor. You can figure out I from I=V/R
Next you have to do the fun part.
Use a current divider equation to figure out the current through R4 and R3
Then use a Voltage divider to figure out the voltage drop across R1 and R2.