just a quick question about ohms law (v=ir) concerning when there is a parallel and a series in the same circuit. i know the rules like in a parallel, v total is v1+v2... and in a series it is 1/v+1/v2=1/vt. and thats the opposite for Current. but what do i do when there is a series and a parallel in the same question.

heres a basic question i just made. sorry its a bit dirty.

i just changed the question to help understand the concept better

The problem i have is that i can find Rt but i have no idea what to do with it because... there are 2 different things

#### Attachments

• 12.3 KB Views: 410
Last edited:

Related Other Physics Topics News on Phys.org
Looks like homework to me.

Looking at the questions

What do you mean calculate current from R1 etc and voltage from R1 etc?

You calculate current through a resistor and the voltage across a resistor.

If you have to calculate these for each resistor the effective resistance Rt will not help you.

Looks like homework to me.

Looking at the questions

What do you mean calculate current from R1 etc and voltage from R1 etc?

You calculate current through a resistor and the voltage across a resistor.

If you have to calculate these for each resistor the effective resistance Rt will not help you.
so just replace from with through then :D. and how do i find the voltage and current Through these resistors without effective resistance?

actually, could i just find the Rt then find the Current in total. and then like separate it using proportions? like say the Rtparallel was 2 and the Rtseries was 2. and Rt in all was 4. Lets say V=8. im just making this up now, so you dont get confused with the pic on top. so i could do V=IR->8=I*4. Itotal=2. i is the same in a series so each resistor in the series is I=2A and for the Parallel i can do the It=I1+I2.... i think i got it.

Last edited:
Redbelly98
Staff Emeritus