FIND THE EQUIVALENT RESISTANCE BETWEEN A AND B
Resistance is a property of every conductor, which is material that allows the flow of electrons. If you have a circuit made up of two points in a straight line and one resistor, you can use the formula for equivalent resistance to find both the resistance between those two points and also the voltage drop across each resistor. To begin with, let’s look at finding equivalent resistance between point A and point B:
The Resistance at Point B is R2 – R1
R2 – R1 = R3 – R4 + R5 – R6
R2 = 1/3 (R1 + R2)
Use the formula for equivalent resistance to find the resistance between points a and b
R= R1 + R2 – R3
In this case, you are given that R1 = 10 ohms and R2 = 20 ohms. You need to find out what value to use for “R3” (the third resistor).
If you know the values of two resistors in series, then you can use Ohm’s Law to calculate any one of them when given another known value. For example, if we have two resistors in series with values 1 ohm and 2 ohms respectively then according to Ohm’s law I = V/R where I represents current flowing through these two resistors so we could write down something like: V = IR (current equals voltage across both components multiplied together) or V1xI2 (voltage across one component times current through both components equals total voltage drop across all three elements).
Repeat this process for the other three pairs of points in the circuit.
The total resistance of your circuit is simply the sum of all four resistances combined: Rtotal = R1 + R2 + R3 + R4
The resistance between A and B is R2 – R1.
We hope you enjoyed learning about equivalent resistance and how it can be used to calculate the total resistance in a circuit.