If two resistances or impedances in series are equal and of the same value, then the total or equivalent resistance, R T is equal to twice the value of one resistor . ... If three or more unequal (or equal) resistors are connected in series then the equivalent resistance is: R 1 + R 2 + R 3 +..., etc.
What would be their equivalent resistance?
The equivalent resistance is where the total resistance connected either in parallel or in series . ... The equivalent resistance of a network is the single resistor which can replace the entire network in such a way that for a certain applied voltage as V we will get the same current as I.
What will be the equivalent resistance in the following circuit?
Answer: The equivalent resistance is 6 Ω
How do you predict equivalent resistance?
The method we use to calculate equivalent resistance is different for each type of circuit. For a series circuit, we simply add up the resistances of each component . However, in a parallel circuit, the reciprocal of the total resistance is equal to the sums of the reciprocals of the resistances of each branch.
What will be the equivalent resistance if they are connected in parallel?
Likewise, if three or more resistors each with the same value are connected in parallel, then the equivalent resistance will be equal to R/n where R is the value of the resistor and n is the number of individual resistances in the combination. ... The equivalent resistance will therefore be: R T = R/n = 100/6 = 16.7Ω .
Why is equivalent resistance less in parallel?
Resistors in parallel
In a parallel circuit, the net resistance decreases as more components are added , because there are more paths for the current to pass through. The two resistors have the same potential difference across them. The current through them will be different if they have different resistances.
What is the resistance formula?
Resistance has units of ohms (Ω), related to volts and amperes by 1 Ω = 1 V/A. There is a voltage or IR drop across a resistor, caused by the current flowing through it, given by V = IR.
What is the equivalent resistance between A and B?
Thus, the equivalent resistance of the given combination of the resistors between A and B is equal to 5R8 . Hence, the correct answer is option B.
Which is true about equivalent resistance?
For resistors all in series, the equivalent resistance is equal to the sum of the resistances .
How do you find effective resistance?
The effective resistance between vertices a and b (after connecting a voltage source between them) is defined as the potential difference between a and b per unit net current from a to b. In other words, Rab = va vb Iab . Once we fix the current from a to b to be Iab = 1, the effective resistance becomes Rab = va vb.
How do I calculate resistance?
If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I . For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance R T = 9 volts / 3 amps = 3 Ω.
How do you calculate resistance in parallel?
The sum of the currents through each path is equal to the total current that flows from the source. You can find total resistance in a Parallel circuit with the following formula: 1/Rt = 1/R1 + 1/R2 + 1/R3 +. .. If one of the parallel paths is broken, current will continue to flow in all the other paths.
What becomes V If we use 2 resistors of 4W in parallel?
What becomes the Voltage if we use 2 resistors of 4W in parallel? As any other data is not provided, the voltage across two resistors of 4w in parallel is the same .
What is the equivalent resistance in terms of N and R?
When n resistors are connected in parallel the equivalent resistance = r/n. 1/n (R/n) : if R =100 ohms and n=10; the equivalent resistance wil be 1 ohm. Resistors in series are additive in nature, so equivalent resistance being R, individual resistance=R/n. In parallel, equivalent resistance= R/(n*n).
