0
Add your answer:
Earn +20 pts
Why does the electrical resistivity of a conductor does not depend on its dimensions?
resistivity and resistance are two diff. things...........resistance depends on length and thickness resisitivity too depends on the area and length resistivity=resistance*area/length
What length of a copper wire 0.800-melimmeter in diameter has a resistance of 100 ohm?
Work it out for yourself. The equation you will need to use is: resistance = resistivity x (cross-sectional area / length) Manipulate the equation to make 'length' the subject, and use 17.25 x 10-9 ohm metres as the value of resistivity.
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 is the resistivity of PVC?
10^15
Why is resistivity of a semiconductor higher than that of a metal?
Resistivity is the resistance, in ohms, between the opposite faces of a 1-metre-cube of a material. For metals, resistivity is in the region of 0.0000001 ohm-metre. For semiconductors, it is much higher - it is in the region of 0.01 ohm-metres.
What is the value of resistivity of human skin?
The value of resistivity of human skin is 0.2 Ohm-meters
What is the value of resistivity of eureka?
The resistivity of Eureka is approximately 2.8 × 10^-6 ohm-meters.
How do you convert conductivity to resistivity?
To convert conductivity to resistivity, use the formula ρ = 1/σ, where ρ is resistivity and σ is conductivity. Resistivity is the reciprocal of conductivity, so dividing 1 by the conductivity value will give you the resistivity value. Resistivity is measured in ohm-meters (Ωm) and conductivity is measured in siemens per meter (S/m).
When the length is increased 2 times the value for resistivity will be?
The value for resistivity will remain unchanged (provided temperature remains constant). Resistivity is a property of the material. The resistance, however, will double. Remember that resistance is directly proportianal to the length of the conductor and inversely proportional to the cross-sectional area of the conductor.
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 fresh and saline water resistivity?
the P.H. value of fresh water is 7 & the P.H. value of saline water is less than 7.
What is the difference between resistance and the resistivity?
Resistance is the measure of opposition to electrical current flow in a material, measured in ohms. Resistivity, on the other hand, is an intrinsic property of a material that quantifies how strongly it resists the flow of electric current. It is specific to the material and is used to calculate the resistance of a given object based on its dimensions.
When a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of both?
The resistivity of germanium will decrease with increasing temperature due to a positive temperature coefficient of resistivity, while the resistivity of silicon will increase with increasing temperature due to a negative temperature coefficient of resistivity. At room temperature, silicon will have a higher resistivity compared to germanium.
If the diameter of wire is double what is resestivity?
The resistivity of a material does not depend on the diameter of the wire. Resistivity is an intrinsic property of the material and is constant regardless of the wire's diameter.
Do wires that have high resistivity have high conductivity also?
No. In fact it is the opposite. Conductivity is the reciprocal of resistivity so a high resistivity means low conductivity. peace.
What are the formulae of resistivity?
There is no 'formula' for resistivity. The resistivities of different conductors have been determined by experiment.
Can resistivity be negetive?
No, resistivity cannot be negative. Resistivity is a material property that indicates how strongly a material opposes the flow of electric current. It is always a positive quantity, even though some materials may have very low resistivity values.
