How will the voltage, current and resistance be distributed

AI Thread Summary
The discussion focuses on understanding the distribution of voltage, current, and resistance in a compound circuit. The user seeks clarification on calculating total resistance, particularly when dealing with resistors that may be in both series and parallel configurations. Guidance is provided on identifying pairs of resistors that can be simplified using standard rules for series and parallel resistors. The user successfully resolves their questions during the lab session, indicating that the insights shared were helpful. Overall, the conversation emphasizes the importance of methodical analysis in circuit calculations.
Buggsy GC
Messages
48
Reaction score
1
I have a lab to work through tomorrow morning and i need to be able to explain how the voltage, current and resistance in the compound circuit diagram below is distributed, and write an equation which can be used to measure the total resistance of the circuit. I know that when you normally try and calculate the compound resistance of a circuit you go Rtotal = Rseries + 1/Rparallel, but I don't know if Resistor bulb (R1) is parallel as well as series, and if it is, how do I calculate that.
 

Attachments

  • IMG_0148.JPG
    IMG_0148.JPG
    49.4 KB · Views: 568
Engineering news on Phys.org
Buggsy GC said:
I have a lab to work through tomorrow morning and i need to be able to explain how the voltage, current and resistance in the compound circuit diagram below is distributed, and write an equation which can be used to measure the total resistance of the circuit. I know that when you normally try and calculate the compound resistance of a circuit you go Rtotal = Rseries + 1/Rparallel, but I don't know if Resistor bulb (R1) is parallel as well as series, and if it is, how do I calculate that.
Take it in steps.
Can you find two resistors that are definitely parallel with no complications (i.e. each joins to the other at each end)? If so, replace that pair with a single equivalent resistor using the usual parallel resistor rule.
If not, can you find two that are in series with no complications (i.e. one end of one joins to one end of the other, with nothing else joining at that point)? If so, replace the pair with single equivalent resistor.
Continue that process until only one resistor left.
 
So for example if all the resistors are 4 ohms, then R1 and R3 will be 2 ohms total and then I just add 4 ohms last as the total for the series ohms e.g. 6V Rtotal= Rs+1/Rp. 4+1/1/2 = total resistance of the circuit.
 
Buggsy GC said:
then R1 and R3 will be 2 ohms total
No, those two resistors do not satisfy the conditions I gave for two in parallel with no complications. They are joined directly at one end but not at the other.
Try some other pair.
 
haruspex said:
No, those two resistors do not satisfy the conditions I gave for two in parallel with no complications. They are joined directly at one end but not at the other.
Try some other pair.
we sorted it out in the lab, thank you very much for your insight
 
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Thread 'EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity)'

Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
View full post »

Similar threads

Coil Voltage/Current: Understand Resistance in Relay Circuits
Replies
48
Views
7K
Obtaining the series and shunt resistance of a photodiode from the datasheet
Replies
3
Views
3K
Setting Voltage supply for a solenoid
Replies
23
Views
5K
The Effects of Resistance on Voltage
Replies
5
Views
2K
Finding the resonant frequency of this "discriminator" demod circuit.
Replies
2
Views
2K
Calculating the resistance in a compensating circuit for a thermocouple
Replies
8
Views
2K
In a basic series-wound generator, what is "load voltage"
Replies
6
Views
3K
Need to Find the Total Resistance
Replies
2
Views
1K
Introductory Circuit Analysis—power ratings
Replies
6
Views
2K
Determining inductive reactance from a 3-phase AC circuit
Replies
17
Views
3K

Hot Threads

Recent Insights

Back
Top