Question: What Happens To Resistance When Area Of Cross Section Is Doubled?

How much does the resistance change when the length of the wire is doubled?

Hence, If the length of a wire is doubled, then its resistance becomes 2 times..

Does cross sectional area affect resistance?

More collisions mean more resistance. Second, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area. … In the same manner, the wider the wire, the less resistance that there will be to the flow of electric charge.

What is the relation between length and resistance?

Resistance depends on an object’s size, shape, and material. In Figure 3 below, the cylinder’s resistance is directly proportional to its length l. The longer the cylinder, the higher the resistance. Additionally, the resistance is inversely proportional to the cross sectional area A.

How will the resistance of a wire change if its diameter is doubled its length remaining the same?

How will the resistance of a wire change when: (i) its length is doubled. … (ii)When diameter is doubled,the area of the wire becomes 4 times the original area. Hence new resistance becomes 1/4th of original R;since R is inversely related to the area A.

What happens to resistance when area is doubled?

Also the resistance of a conductor is inversely proportional to its cross-sectional area (A) as R ∝ 1/A. Thus doubling its cross-sectional area would halve its resistance, while halving its cross-sectional area would double its resistance.

What happens to the resistance when area of cross section increases?

On increasing the area of cross-section, resistance decreases. This is because resistance is inversely proportional to area.

How does electric resistance change with the change in the area of cross section of conductor?

Resistance of a conductor is inversally proportional to area of cross section that means if the area of cross section increases resistance decreases.

What will be the resistance if length is doubled?

Resistance is directly proportional to the length of the wire, and inversely proportional to the cross sectional area of the wire. … Doubling the length will double the resistance, but the wire also must get thinner as it is stretched, because it will contain the same amount of metal in twice the length.

Why resistance decreases with increase in area of cross section?

The longer a wire is the more resistance it has due to the longer path the electrons have to flow along to get from one end to the other. The larger the cross sectional area, the lower the resistance since the electrons have a larger area to flow through.

Which wire has more resistance thick or thin?

The resistance of a thin wire is greater than the resistance of a thick wire because a thin wire has fewer electrons to carry the current. The relationship between resistance and the area of the cross section of a wire is inversely proportional .