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How do you find length and crosssectional area of a wire given just resistancevolume and resistivity?
Resistance varies directly as length
Resistance varies inversely as cross-sectional area
Hence R varies as L
and R varies as 1/A
Thus R = r(L/A) where r is the coefficient of resistance of the wire. If the wire is of uniform cross section, then A = V/L where V is the volume of the wire. Hence now we have R = r(L/(V/L)) or R = r(L-squared/V) or L-squared = (RxV)/r and so the answer would be L = square-root of (RxV)/r
What else can I help you with?
How do you find the radius given the chord length?
If you are given a chord length of a circle, unless you are given more information about the chord, you can not determine what the radius of the circle will be. This is because the chord length in a circle can vary from a length of (essentially) 0, up to a length of double the radius (the diameter). The best you can say about the radius if given the chord length, is that the length of the radius is at least as long has half half the chord length.
How do you find the length and width and the area is given?
If the area is already given, there should also be either width or length given. Do the area, divided by the length or the width. For example, the area divided by the width equal the length. Hope it helps.
How do you find radius of curvature if focal length is given?
radius of curvature = 2Focal length
What is the area of the rectangle when the length and breadth are given?
All you need to do is length x breadth = area
What is the length of a rectangle that has a width of 2.5cm and an area of 20.5cm2?
Given , area =A= 20.5cm2 = length*width, so (length)(2.5)=20.5 or length=20.5/2.5=8.2cm approx.....
What is the formula for calculating resistance if the resistivity is 4.3 10-3 A?
The formula for calculating resistance (R) using resistivity (ρ) is given by ( R = \frac{\rho \cdot L}{A} ), where ( L ) is the length of the conductor and ( A ) is the cross-sectional area. In the given context, if the resistivity is ( 4.3 \times 10^{-3} , \Omega \cdot m ), you would need the length and cross-sectional area of the conductor to calculate the resistance. Without those values, the resistance cannot be determined solely from the resistivity.
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.
Would have the same resistance as a copper wire that is 4 m long and has a cross-sectional area of 0.066 cm2?
A wire with the same resistance as the given copper wire would have the same resistivity as copper. The resistance of a wire is dependent on its resistivity, length, and cross-sectional area. To calculate the resistance of a wire, use the formula R = (resistivity * length) / area; however, without the specific resistivity value, an exact value cannot be provided.
What is the difference between resistance and the resistivity?
Resistance is the value of a given wire in ohm but resistivity is value of the material with which that wire is made in ohm meter. R = rho * L / A Here rho is resistivity and R is resistance. L is the length of the wire and A is area of cross section
What is resistivity and what factor does it depend?
Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the movement of electric charge. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is theohm⋅metre (Ω⋅m)It defined as resistance offerde by a unit length and cross section area conductor.It depends on material used.it depends on relexation time and temperature.
Which common factor affects both resistance and resistivity and how?
Temperature is a common factor that affects both resistance and resistivity. As temperature increases, the resistivity of conductive materials typically increases due to increased atomic vibrations, which impede the flow of electrons. Consequently, this rise in resistivity leads to an increase in resistance for a given material. Thus, both resistance and resistivity are influenced by temperature, impacting the efficiency of electrical conduction.
Difference between resistance and resistivity?
Nothing. Resistivity is defined as specific resistance. However, Resistivity is different from resistance.Answer:Resistance is the opposition offered by the material which is of any shape and size whereas resistivity is the resistance offered by the material with unit area of cross section and unit length.Therefore, resistance varies depending upon shape and size of the material while resistivity is constant for a particular material.
How does the resistance of a wire depend on its dimensions?
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. This means that for a given material, a longer wire will have higher resistance and a thicker wire will have lower resistance. The relationship is described by the formula: Resistance = resistivity x (length / cross-sectional area).
is it construct two wires of the same length one of copper and one of iron that would have the same resistance at the same temperature?
Yes, it is possible to construct two wires of the same length, one of copper and one of iron, that have the same resistance at the same temperature. The resistance of a wire is determined by its resistivity, length, and cross-sectional area, as given by the formula ( R = \frac{\rho L}{A} ). Since copper has a lower resistivity than iron, the copper wire would need a larger cross-sectional area than the iron wire to achieve the same resistance.
What is the resistivity of copper at 75 degrees?
The resistivity of copper at 75 degrees Celsius is approximately 1.68 x 10^-8 ohm-meters. Resistivity is a material property that quantifies how strongly a given material opposes the flow of electric current. In the case of copper, its low resistivity makes it an excellent conductor of electricity, which is why it is commonly used in electrical wiring and other applications where high conductivity is desired.
What is the relationship betwen resistance and resistivity?
They are just different forms of the same word as it applies in electricity. The higher the resistance or resistivity of a load, the less the current for a given voltage. There are likely grammatic rules that apply for usage in a sentence, but you'll have to check on that with a grammarian.
What is the relationship between resistivity and circumference?
The relationship between resistivity and circumference is inverse.The resistance of a substance decreases as the surface area of that substance increases. The greater circumference presents a greater conduction surface.AnswerThe original answer describes resistance, NOT resistivity. Additionally, it is incorrect because resistance is inversely-proportional to cross-sectional area NOT circumference!There is NO relationship between resistivity and the circumference of a material. Resisitivity is a constant at any given temperature and is completely unaffected by the dimensions of a material.
