you should be right, when I shorted the 12 kΩ, i can get the correct answer of 6kΩHenryk said:
what do you mean by "delta" and "star"?jaus tail said:
If you are unfamiliar with the Δ-Y transformations (It would be worth your while to look it up!), then an alternative is to apply a voltage source across AB and solve the circuit for the current that the source produces. Ohm's law will then tell you the effective load resistance.yecko said:
gneill said:
If you look at the circuit, the left side of the 12 ##k\Omega## resistor is connected to the right sides of both 3 ##k\Omega## via the same resistances, hence it's voltage is an average of the corresponding nodes voltages. The same is true for the right side of that resistor.yecko said:
Do you know the loop current method? you can use that too.yecko said:
No, you can avoid star-delta if you apply mesh or nodal analysis, or even "raw" KVL and KCL equations with branch currents.jaus tail said:
I'm struggling to understand this. Can you please post a picture of the configuration?mpresic2 said:
The 9kΩ resistors are arranged as a potential divider, setting their midpoint at (in this case) 50% of the potential across them all. The pair of 6kΩ resistors likewise form a similar potential divider ...jaus tail said:
Equivalent resistance is the combined resistance of multiple resistors in a circuit. It is the total resistance that the current experiences when flowing through the circuit.
To calculate equivalent resistance, you can use the formula 1/Req = 1/R1 + 1/R2 + 1/R3 + ... + 1/Rn, where Req is the equivalent resistance and R1, R2, R3, etc. are the individual resistances in the circuit. Alternatively, you can use the parallel and series resistor rules to simplify the circuit and calculate the equivalent resistance.
Series resistors are connected end-to-end, so the current flowing through them is the same. The equivalent resistance of series resistors is the sum of individual resistances. Parallel resistors, on the other hand, are connected side-by-side, so the voltage across them is the same. The equivalent resistance of parallel resistors is calculated using the parallel resistor rule.
Equivalent resistance is important because it helps us understand the behavior of a circuit. It allows us to calculate the current flowing through the circuit and the voltage across each resistor. It also helps us determine the power dissipated in the circuit and the efficiency of the circuit.
Equivalent resistance can be used for simple circuits with only resistors. However, for more complex circuits with other components like capacitors and inductors, the concept of equivalent impedance is used. Equivalent impedance takes into account the effects of all components in the circuit, not just resistors.
