2. For the following circuit, find RT, IT, I3, V1, V3, V5.
V = IR, ohms law, Kirchoff's laws
The Attempt at a Solution
RT = R1 + R2 + R3 + R4 + R5 + R5
RT = 20 + 22 + 30 + 27 + 40 + 20
RT = 159 ohms
IT = V/RT
IT = 120 V / 159 ohms
IT = 0.75 amps
I have the total resistance and total current.. I'm not sure exactly how to go about finding the current at I3 though. Any help would be appreciated.
voltage, minus the voltage drop of the 2 resistors before it, / resistance of the 2 resistors before it? I'm not sure.