0
Resistivity of a wire of a certain material is independent of the wire's length. The only thing that would change is resistance. Since R=ρ/A, in the case of length doubling, resistance will also double.
Resistance (R, Ω)
Resistivity (ρ, Ω m)
Length (, m)
Cross surface area (A, m²)
What else can I help you with?
How does resistivity vary if length and area are doubled?
if length is doubled then resistivity increases&when area is doubled resistivity decreases.
What change in resistivity if length is doubled?
Resistivity is a property of a substance, and doesn't depend on the dimensions of a sample. If the length of a conductor is doubled, then its resistance doubles but its resistivity doesn't change.
If the diameter of wire is double what is resestivity?
Resistivity won't change. Resistivity is a material property that doesn't depend on the shape.
Three ways which resistance of a wire can be increased?
You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).
Do bend in wire affect the resistivity?
Bending a wire can change its resistance due to changes in its length and cross-sectional area. However, resistivity, which is an intrinsic property of the material, remains constant regardless of bending.
What happens to the ammeter reading in ohms law when the length of the wire is doubled?
When the length of the wire is doubled, its resistance increases, as resistance is directly proportional to length according to Ohm's Law (R = ρL/A, where ρ is resistivity, L is length, and A is cross-sectional area). If the voltage remains constant, the increased resistance leads to a decrease in current, which is measured by the ammeter. Therefore, the ammeter reading will decrease when the length of the wire is doubled.
If a wire of resistivity is stretched to thrice its initial length what will be its new resistivity?
The new resistivity of the wire will remain the same, as resistivity is a material property and is independent of the dimensions of the wire. The resistance of the wire will increase because of the increase in length.
What is an Grade an answer to what affects the resistance in a wire?
*the resistivity of the metal the wire is made of *thickness of wire *length of wire
Can you use copper wire instead of eureka wire in finding its resistivity?
Yes, you can use copper wire instead of eureka wire to determine resistivity by measuring its resistance, length, and cross-sectional area. However, keep in mind that the resistivity values for copper will be different from eureka wire, so you will need to account for that difference in your calculations.
How will magnetic field itensity change if the current is doubled?
If the current in a wire is doubled, the magnetic field intensity around the wire will also double. This is because the magnetic field strength is directly proportional to the current flowing through the wire according to Ampere's Law.
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.
Does a thin wire has more RESISTIVITy or a thin wire of the same material?
Resistivity is a property of the material only, not of the dimensions of the wire. The resistance of a wire is the resistivity times the length divided by the cross-section area. So a long wire has more resistance, a thicker wire has less resistance, even if they are both made of copper with the same resistivity.
