Now all the resistance between the points A to D becomes in series, Hence, we can add all of them and get the final equivalent resistance. Hence, we can conclude that option (C) R=30Ω is the correct answer.
What is equivalent resistance between A and B?
Hence equivalent resistance between points A and B is 22.5Ω .
What is the equivalent resistance between?
What is Equivalent Resistance? The equivalent resistance is defined as a point where the total resistance is measured in a parallel or series circuit (in either the whole circuit or in a part of the circuit). The equivalent resistance is defined between two terminals or nodes of the network .
What will be the equivalent resistance between two points?
The resistance R 2 and R 3 are in series combination. ... Similarly, the resistance R 5 and R 6 are in series combination. Therefore their equivalent resistance, R”= R 5 + R 6 = 10+10 = 20 Ω .
What is the equivalent resistance between A and B if R 3?
So, equivalent is : Finally, R, R and 3 ohm are in series. So, So, the equivalent resistance between A and B in the circuit is 8 ohms .
What is the formula of equivalent resistance?
The sum of the current in each individual branch is equal to the current outside the branches. The equivalent or overall resistance of the collection of resistors is given by the equation 1/R eq = 1/R 1 + 1/R 2 + 1/R 3 . ..
How do you find the equivalent resistance example?
- R_1 = 480 Omega.
- R_2 = 320 Omega.
- R_3 = 100 Omega.
What is the equivalent resistance between points A and B in the figure when R 18ω?
18Ω and 42Ω resistors are in series. 60Ω and 40Ω are in paralle. The equivalent resistance between points a and b is 24Ω .
What do you mean by specific resistance of A conductor?
Specific resistance is defined as the resistance offered by a unit length and unit cross-section of the substance to a current when a voltage is applied to it .
What is the current flowing through the 3 ohm resistor?
In the given electric circuit, the current flowing through 3 ohm resistor is 1 ampere .
What is the equivalent resistance between points A and B of the circuit shown in FIG?
⇒ RAB=30 Ω
What is the total resistance of the circuit?
The total resistance of a series circuit is equal to the sum of individual resistances . Voltage applied to a series circuit is equal to the sum of the individual voltage drops. The voltage drop across a resistor in a series circuit is directly proportional to the size of the resistor.
What will be the equivalent resistance if they are connected in parallel?
In other words, the equivalent resistance of a parallel network will always be less than the smallest individual resistor in the combination. ... For example, six 100Ω resistors are connected together in a parallel combination. The equivalent resistance will therefore be: R T = R/n = 100/6 = 16.7Ω .
What will be the equivalent resistance where two resistance of 3 ohm and 6 ohm are connected in parallel combination?
Answer Expert Verified
so, R=2 ohm . THERE IS ONE MORE METHOD TO FIND THE equivalent RESISTANCE IN PARALLEL, BUT THIS FORMULA WILL BE USED WHEN THERE WILL BE ONLY 2 RESISTANCES IN PARALLEL COMBINATION. =2 OHM.
Why do we find equivalent resistance?
The equivalent resistance is where the aggregate resistance connected either in parallel or series is calculated . Essentially, the circuit is designed either in Series or Parallel. Electrical resistance shows how much energy one needs when you move the charges/current through your devices.
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 find the equivalent resistance of A Wheatstone bridge?
Firstly, combine the series resistances and form the ideal circuit of a Wheatstone bridge. Just keep in mind no current will flow through the central resistance. Then apply the formula and find the answer. 1R=1R1+1R2 when in parallel .
What is specific resistance class 12?
As explained in the hint, the specific resistance or resistivity of a material is defined as the resistance of a body of unit length and cross sectional area made of that material. It is a constant characteristic property of the material. Hence, mathematically, it is expressed as, ρ=RAl —(1)
Which resistor arrangement has the greatest value of resistance?
The resistance is maximum when all the resistors are connected in series .
What is difference between resistance and specific resistance?
The unit of resistance is ohm (Ω). Resistance of conductor depends on its length, temperature, cross section area , material of the conductor. ... At a fixed temperature amount of resistance offered in the flow of current by a conductor having unit length and unit cross section is called its specific resistance.
What is specific resistance or resistivity *?
Resistivity or specific resistance of a material is a measure of the resistance , which it offers to the flow of current through it. It is an intrinsic property of a material. Specific resistance depends on the composition, temperature, pressure of the material.
What is the current through the 5 ohm resistance?
Current = 2 amphere .
What is the potential difference across 3 ohm resistor?
The two sub circuits are Closed loops They cannot send any current through the 3Ω resistor Hence the potential difference across the 3Ω resistor is zero .
What is the current through the 10 Ω resistor in the figure Figure 1?
Similarly, apply the Kirchhoff’s loop rule to the lower loop. The negative sign shows that the current is in the opposite direction as what was chosen for the circuit. The current through 10Ω resistor is 0.36A .
When three resistance are connected in series their equivalent resistance is?
The equivalent resistance of a set of resistors in a series connection is equal to the algebraic sum of the individual resistances . Figure 6.2. 2 (a) Three resistors connected in series to a voltage source. (b) The original circuit is reduced to an equivalent resistance and a voltage source.
When n resisters k ohms are connected in series then the total resistance is?
This implies that the total resistance in a series is equal to the sum of the individual resistances. Therefore, for every circuit with N number of resistors connected in series: RN(series)=R1+R2+R3+... +RN .
What do VI and R stand for in Ohm’s law?
where I is the current through the conductor in units of amperes, V is the voltage measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms .
How do you find the resistance of a resistor?
Your units are ohms for resistance, volts for voltage, and amps for current. This formula tells you that your resistance is always equal to your voltage divided by the current. You can also say that your voltage is equal to your current multiplied by your resistance, or V = IR in equation form, with R = V / I.
What is the total resistance if three resistance of 4 ohm 6 ohm and 8 ohm respectively are connected in parallel?
Minimum resistance is obtained by connecting all three resistances in parallel => 1/R =1/4+1/6+1/8 =>1/R = 6/24+4/24+3/24 => 1/R = 13/24 => R =24/13 ohm . Hope it helps you.
When two resistors of 6 ohm are connected in series the equivalent resistance is?
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The equivalent resistance of two resistor connected in series is 6Ω and their equivalent resistance is 43Ω .
How do you measure resistance in a circuit?
Instead, resistance is calculated by measuring the current and voltage applied to the circuit . When a current is applied to the circuit under measurement, the circuit (resistance) exhibits a voltage (or more precisely, a voltage drop). Resistance can be calculated by measuring the current and voltage using Ohm’s Law.
When 5 ohm and 3 ohm resistor are in parallel the equivalent resistance is?
The equivalent resistance of these resistors R where 1/R = 1/5 + 1/5 = 2/5, or R = 5/2 = 2.5 ohm. The equivalent resistance of the configuration of the 3 resistors of 5 ohm each is 7.5 ohm .
When two resistance of 1 ohm and 3 ohm are connected in parallel then the equivalent resistance is?
When two resistances 1 ohm and 3 ohm are connected in parallel, their equivalent resistance is less than 1 ohm .
