the resistance can never increase or decrease....... (you can't open the resistor and take out the something and make the resistance increase or decrease)
AnswerSince resistance is directly proportional to the length of a conductor, increasing the length of a wire will increase its resistance. For example, if you double its length, you will double its resistance.
The resistance is indirectly proportional to the cross sectional area (thickness) so if the CSA doubles the resistance halves e.t.c
In a nutshell as it gets thicker the resistance decreases.with regards to the formula :R=PL/A. R=resistance, P=resistivity, L=length, A=area.
as the conductor area increases the resistance decreases..R=L/A *RESISTIVITY..
when the cross sectional area of the wire increases, the resistance decreases. R=(resistivity coefficient x Length)/cross sectional area
The resistance does not increase because if they cross at the cross-sectional they are not increasing.
the resistance decreases
sideman like sam
Nothing happens.
Assume that the increase in length is achieved by uniform reduction in the cross-sectional area of the wire. Then an increase in length by 4 times will result in the cross sectional area being reduced to a fifth of it original value. This will increase the resistance to five times its previous value.
yes, Easy of flow of current increases with increase of area of cross section.
Yes. The bigger the cross section, the lower the resistance.
The resistance is based on the cross sectional area. It is conceivable that you could bend a wire in such a way as to affect the cross sectional area, but unlikely.
When it is on the cross-sectional area it is inversely proportional to the wire,otherwise it is directly proportional to the wire.
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).
Temperature, Length of wire, Area of the cross-section of wire and nature of the material.
The resistance can be changed in following two ways: 1.By change the length of the wire. 2.By changing the area of cross section of the wire.
Assume that the increase in length is achieved by uniform reduction in the cross-sectional area of the wire. Then an increase in length by 4 times will result in the cross sectional area being reduced to a fifth of it original value. This will increase the resistance to five times its previous value.
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
Current (measured by an ammeter) and Voltage (measured by a voltmeter) R= V/I Resistance equals voltage divided by current ================================ That's wonderful, but the measurement doesn't "affect" the resistance of the wire. The factors that do "affect" the resistance ... i.e. determine what the resistance will be ... are -- substance of which the wire is composed -- dimensions of the wire: thickness and length.
if length is doubled then resistivity increases&when area is doubled resistivity decreases.
Area of cross section: Resistance R is inversely proportional to the area of cross section ( A) of the conductor. This means R will decrease with increase in the area of conductor and vice versa. More area of conductor facilitates the flow of electric current through more area and thus decreases the resistance. This is the cause that thick copper wire creates less resistance to the electric current.
The resistance can be changed in following two ways: 1.By change the length of the wire. 2.By changing the area of cross section of the wire.
A piece of wire stretched such that its length increases and its radius decreases will tend to have its resistance increase. The formula for this is: R = ρL/A where ρ = resistivity of the material composing the wire, L = length of the wire, and A = area of the conducting cross section of the wire. It can easily be seen that as area decreases resistance gets higher. In the case proposed the wire length is not reduced as it is stretched to reduce the area, this increases the resistivity as well.
yes, Easy of flow of current increases with increase of area of cross section.
When the length of the wire increases voltage drop across the wire will occur.There are two factors that can result in voltage drop. One diameter of the wire, two length of the wire.Voltage drop increases with increase in length of wire, whereas voltage drop decreases with increase in diameter (cross section area) of the wire.G.RAOAnswerIf you are asking what happens to the voltage across a length of wire when its length increases, the answer is nothinghappens! The voltage applied to the wire is determined by the supply, not by the load (i.e. the wire).