Table of Contents
- 1 How does the length and cross sectional area affect resistance?
- 2 How does the resistance of a wire vary with its cross sectional area?
- 3 How does the resistance of a wire varies with its length?
- 4 How the resistivity of a conductor varies with length and cross-sectional area of the conductor?
- 5 What is the relationship between resistance and length of wire?
- 6 What is the ratio of resistances of two wires of same material?
- 7 What is the relationship between the resistivity of two conductors?
- 8 Will resistivity and resistance be the same if the cross section is same?
How does the length and cross sectional area affect resistance?
A thicker wire has a smaller resistance than a thin wire. A more detailed investigation shows that resistance and cross section area are inversely proportional . If you double the cross section area you half the resistance of the wire.
How does the resistance of a wire vary with its cross sectional area?
Electrical resistance is directly proportional to the length (L) of the conductor and inversely proportional to the cross-sectional area (A). Resistance is inversely proportional to the area of cross-section. When the area of cross-section increases the resistance decreases and vice versa.
Does resistance depend on cross section?
Resistance ( R) Measure of how much an object resists current flow. Depends on material, length, and cross sectional area.
How does the resistance of a wire varies with its length?
Resistance is directly proportional to the length and inversely proportional to the area of cross section.
How the resistivity of a conductor varies with length and cross-sectional area of the conductor?
Resistivity Summary The resistance of a conductor is directly proportional to its length (L) as R ∝ L. Thus doubling its length will double its resistance, while halving its length would halve its resistance. Also the resistance of a conductor is inversely proportional to its cross-sectional area (A) as R ∝ 1/A.
How does resistance depend on the length of a wire?
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. See resistivity. The resistance of a conductor, or circuit element, generally increases with increasing temperature.
What is the relationship between resistance and length of wire?
The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through. The relationship between resistance and wire length is proportional .
What is the ratio of resistances of two wires of same material?
Two wires of same material have lengths L and 2L cross-sectional areas 4A and A respectively. The ratio of their resistances would be The Fish Tale Across the Wall Tenths and HundredthsParts and Whole Can you see the Pattern?
Does the resistance of a wire depend on the cross sectional area?
Resistance will depend on area and length . Resitivity is a property which depends on type of material used, so it will not change on changing the cross sectional area since material of both the wires is same. Resistance of both wires will be different as geometry varies .
What is the relationship between the resistivity of two conductors?
The resistivity of two conductors made of the same material is the same. The ratio of their resistances thus depends on their lengths and cross-sectional areas. The ratio of the resistances of the two conductors is directly proportional to the ratio of their lengths and inversely proportional to the ratio of their cross-sectional areas.
Will resistivity and resistance be the same if the cross section is same?
Yes of course the resistivity would be same because it is the property of the material regardless of the cross section area. In fact the resistance changes as it is inversely proportional to the area of cross section of the material. No the resistance will not be same!! Resistivity is in ohms-meter.