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?
A combined circuit refers to a circuit that contains both series and parallel elements. This means that some components in the circuit are connected in a series, while others are connected in parallel.
The purpose of a combined circuit is to combine the advantages of both series and parallel circuits. Series circuits provide a single pathway for electrical current, while parallel circuits provide multiple pathways. A combined circuit can achieve both a specific voltage and current, making it useful for a variety of applications.
To calculate the total resistance in a combined circuit, you must first determine the equivalent resistance of the series elements. This can be done by adding up the individual resistances. Then, you can use the formula 1/Req = 1/R1 + 1/R2 + ... + 1/Rn to determine the total resistance of the parallel elements. Finally, you can add the equivalent resistance of the series elements to the total resistance of the parallel elements to get the total resistance of the combined circuit.
Kirchhoff's Voltage Law states that the sum of the voltages around a closed loop in a circuit must equal zero. In a combined circuit, this law is used to determine the voltage drops across each component. By applying this law to different loops in the circuit, you can calculate the voltage at different points and ensure that the total voltage is conserved.
To analyze a combined circuit, you must first simplify the circuit by combining series and parallel elements into their equivalent resistances. Then, you can use Kirchhoff's Voltage and Current Laws to determine the voltage drops and current flow in the circuit. Finally, you can use Ohm's Law (V = IR) to calculate the voltage, current, and resistance at different points in the circuit.