Is this better? My answer is still a little off though...phyzguy said:
Should I add a "dummy" 0 ohm resistor on that piece of wire...? Would it change anything?NascentOxygen said:In the original image you can see there is a piece of wire parallel to the 10 ohm resistor ...
But then I'd have to compute [(1/0)+(1/10) ]^-1...and 1/0 is undefined...or do I just leave it out of the calculation?NascentOxygen said:
I see.kamhogo said:
It would read 10 ohms...NascentOxygen said:
It would read 0Ω, the wire is a short circuit.kamhogo said:
NascentOxygen said:
A short circuit is a piece of wire (a perfect conductor, ideally) that joins one node to another and causes all points along it to have the same voltage.kamhogo said:
Ooooh. So the ideal 0 ohm wire would kind of force the 10 ohm resistor to be null? How does that work?NascentOxygen said:
0 ohm in parallel with 10 ohm gives an equivalent resistance of 0 ohm between the two points.kamhogo said:
I just tried the computation with 0.0001 ohm resistor in parallel with a 10 ohm resistor and I got 0. Wow! How can that be possible? Does it mean that the 10 ohms resistor might as well not be there?NascentOxygen said:
Thanks everyone for your mentoring! Appreciated from the bottom of my heart!kamhogo said:
Yes.kamhogo said:
If you were an electron in a circuit and were given the choice, would you prefer to fight your way through a 10Ω resistance, or glide almost effortlessly along a copper conductor?kamhogo said:
kamhogo said:
Second option! Thanks a lot for the image.NascentOxygen said:
Equivalent resistance is the single resistance value that can replace a complex circuit without changing the overall current or voltage. It is calculated by combining all the individual resistances in the circuit using Ohm's law.
To calculate equivalent resistance, first identify all the individual resistances in the circuit. Then, use Ohm's law (R = V/I) to find the individual currents and voltages. Finally, use the formula Req = Vtotal/Itotal to calculate the equivalent resistance.
No, equivalent resistance and total resistance are not the same. Total resistance refers to the sum of all the individual resistances in a circuit, whereas equivalent resistance refers to the single resistance value that can replace the entire complex circuit.
Equivalent resistance is important because it allows us to simplify complex circuits and make calculations easier. It also helps us understand the overall behavior of a circuit and predict how changes in resistance will affect the circuit.
No, the equivalent resistance can never be lower than the lowest individual resistance in a circuit. This is because adding more resistors to a circuit will always increase the overall resistance, and the equivalent resistance is the value that combines all the individual resistances in the circuit.