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What is the formula of relation between resistance and area of a wire?
Wiki User
∙ 14y ago
If the area you're referring to is the cross-sectional area of the conductor: you can think of the cross-sectional area of a wire as the thickness of that wire. If you bundled two wires together in parallel, that would be a bit like having one, thicker wire, wouldn't it?
So increasing the area is analogous to adding more pathways for current to travel in parallel. Metals carry current on their surface, but also through electron "bands" in their interior -- increasing area means adding more bands = adding more pathways. And adding more pathways reduces resistance.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoThere is indeed a relationship between the length and cross-sectional area of a conductor and its resistance, but not with its resistivity.
Resistance is directly-proportional to the length, but inversely-proportional to the cross-sectional area, of a wire.
Resistivity, on the other hand, is a constant for a particular metal and is independent of the conductor's dimensions.
Wiki User
∙ 7y agoR = rho*L/A whereR is the resistance of a conductor of uniform cross section,
rho is the electrical resistivity of the conductor,
L is its length and
A is the cross-sectional area.
Wiki User
∙ 14y agoresistance of the wire is inversely proportional to area.R=rL/A,where r is the resistivity,l being the length,and R be the resistance
Wiki User
∙ 7y agoResistance = rho x length / areaWhere:
rho is the resistivity (a material-specific property)
length... well, that's the length
area is the cross-sectional area
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What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
What does resistance in wire depend on?
Resistance is directly proportional to the resistivity and length of the conductor, and inversely-proportional to its cross-sectional area. As resistivity is affected by temperature, we can say that temperature indirectly affects resistance.
What is the formula in finding the reduced size wire if the resistivity is increased?
L1-L0=(RESISTANCE*AREA)/RESISTIVITY where L1=INIIAL LENGTH and L2=FINAL LENGTH
Relation between tensile stressbending moment and section of modulus?
The relation between bending moment and the second moment of area of the cross-section and the stress at a distance y from the neutral axis is stress=bending moment * y / moment of inertia of the beam cross-section
How do you calculate a cross-sectional area When all you know is resistance resistivity and length?
I think the equation you are looking for is Resistance (ohms) = Resistivity * Length / Area or R=p*L/A. This is the resistance of a circular wire with cross-section of A, length of L, and material with resistivity p. So to get area: Area = Resistivity * Length / Resistance.
What formula measures force between objects and not resistance?
Force = Pressure x Area
How do you find the length of a side of a rectangle when you only have the area?
It can't be done. You must also know at least any one of the following: Perimeter Relation between length and breath Relation between Area and length Relation between Area and breath Relation between perimeter and Area Breath and so on...........
What measure did they employ to lessen the resistance?
We can reduce the supply voltage from the ohms law relation.......v=ir... resistance is directly proportional to supply voltage...or.....we can control the resistance by the relation by R is directly proportional to l/a l=length a=area
What is the formula for calculating ASR?
by ASR do you mean Area Specific Resistance?
What is the relation between force and preesure?
Pressure = force / area
What is the relationship between the area and the radius?
In relation to the area of a circle: pi*radius^2
What is the relation between area of a sector and length of an arc of a circle?
There is no direct relation between the area of a sector and the length of an arc. You must know the radius (or diameter) or the angle of the sector at the centre.
What is the formula of resistivity?
R is the electrical resistance,A is the cross-sectional area,l is the length of the piece of material.
What is the formula for resistivity?
Resistance (Ohms) = Voltage (v) / Current (I)
Does resistance depends upon the dimension?
The basic relation to calculate resistance tells us: R = rho*l/A with R = resistance [Ohm] rho = resistivity [Ohm*meter] l = length [m] A = surface area [m^2] So, the resistance (given a certain resistive material) merely depends on the ratio between the length and the surface area of a resistor. Resisotrs tend to be bigger if they have to dissipate more power, for mor heat needs to be lost.
What is formula of resistivity?
R is the electrical resistance,A is the cross-sectional area,l is the length of the piece of material.
What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
