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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)

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Since 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.

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12y ago
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13y ago

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.

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14y ago

as the conductor area increases the resistance decreases..R=L/A *RESISTIVITY..

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13y ago

when the cross sectional area of the wire increases, the resistance decreases. R=(resistivity coefficient x Length)/cross sectional area

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11y ago

The resistance does not increase because if they cross at the cross-sectional they are not increasing.

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13y ago

the resistance decreases

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10y ago

sideman like sam

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9y ago

Nothing happens.

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Q: Does resistance increase as the cross-sectional area of the wire?
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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).


The magnitude of the resistance of a wire depends on?

Temperature, Length of wire, Area of the cross-section of wire and nature of the material.


What are two ways to alter the wire to increase the resistance in the electric circuit?

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.


What will happen to the resistance of a wire if it is stretched to increase its length by 4 times?

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.


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 increases resistance in a wire?

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.


How does resistivity vary if length and area are doubled?

if length is doubled then resistivity increases&when area is doubled resistivity decreases.


Why does Resistance decrease in thin wire?

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.


What are two ways you could alter the wired to increase the resistance in the electrical circuit?

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 is stretched such that its length increases and its radius decreases the resistance of the wire will tend to?

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.


Does a short thick metal wire or a long narrow metal wire have more resistance?

yes, Easy of flow of current increases with increase of area of cross section.


What happens to voltage when wire length increase?

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).