The discussion focuses on analyzing a combined circuit problem involving voltage (Vt = 30V), total current (It = 4.3A), and resistances (Rt = 7Ω). The participant provided calculated voltages (V1 = 12.9V, V2 = 2.15V, etc.) and currents (I1 = 4.3A, I2 = 2.15A, etc.) across various components. Feedback confirms the calculations are mostly correct but emphasizes the importance of indicating current direction and defining a ground reference point for voltage measurements. Overall, the participant's breakdown of the problem is deemed reasonable with minor adjustments suggested.
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It looks reasonably good, but electrical currents do have a direction=normally you mark the direction with an arrow and if the current goes opposite to the arrow, it is then a negative current. Also, the voltages you have are voltage drops across the resistors. Often the question will be what is the voltage at a point in the circuit, and in order to do this, a point in the circuit (e.g. the "-" terminal of the voltage source) will be designated as the "V=0" or "ground" point. Then the "+" terminal of the battery will be V=+30 V, and the voltages at other locations are determined from the voltage drops. All in all, you did reasonably good.j doe said:Homework Statement
Homework Equations
The Attempt at a Solution
Vt=30V
It=4.3A
Rt=7Ω
V1=12.9V
V2=2.15V
V3=2.15V
V4=4.3V
V5=12.9V
VA=4.3V
VB=4.3V
I1=4.3A
I2=2.15A
I3=2.15A
I4=2.15A
I5=4.3A
IA=2.15A
IB=4.3A
R1=3Ω
R2=1Ω
R3=1Ω
R4=2Ω
R5=3Ω
RA=2Ω
RB=1Ω
Did I break down the problem correctly? And are all these calculations correct?