I have to find the Requivalent and all of the currents and voltages in the circuit below.(adsbygoogle = window.adsbygoogle || []).push({});

l------------Resistor 1----l---------l

l l l

battery l l

l Resistor 2 Resistor 3

l l l

l l l

-----------------------------------l

My picture is not showing up right, so I'll try to describe it. The battery is on the left and the wire moves up to the right where resistor 1 is. The wire continues, but splits into two paths (making a parallel). The wire turns to the right, where resistor 2 is, but if you keep going straight and then turn right, thats where resistor 3 is.

they give us the following:

R1=40 ohms

R2=60 ohms

R3=60 ohms

Vtotal=120 V

I am not sure where to even start. I know V=IR, and I-V/R, but I don't know how to find the other numbers. I also know that in a series, current stays the same while voltage changes, while in parallel, current changes, while voltage stays the same.

I also know that for series, the Req= R1+R2, while in a parallel, 1/Req=1/R1+1/R2

I just can't figure out the numbers when you have a parallel in a series. Can you help me get started?

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# Homework Help: How to find currents and voltages in circuits

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