How is resistance related to area of cross section?

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.

What is the resistance of a copper wire having 1m length and 1 mm² cross-sectional area?

R = 8.5 x 10^-3 ohm.

Does resistivity change with area of cross section?

Resistance depends on resistivity and the geometry of material, and for wire / rod, the length and cross section of material. Resistivity and Resistance are different. A material’s Resistivity doesn’t change with Length and Area.

How do you find the length when you have the area and resistance?

The resistance R of a cylinder of length L and cross-sectional area A is R=ρLA R = ρ L A , where ρ is the resistivity of the material.

What is relation between resistance length and area of cross-section of conductor?

1. Resistance of a conductor (R) is directly proportional to its length (l) for a constant potential difference. 2. Resistance of a conductor is inversely proportional to its cross section area.

What will be the resistance of A copper wire of length 1’m and area of cross section 2 mm 2 given resistivity of copper is 1.7 10 (- 8 Ω m?

EXAMPLES Calculate the resistance of a copper wire of length 1 m and area of cross section 2 mm. Resistivity of copper is 1.7 x10 m. REP-(1.7x10mx A m 2x(10 ) = 8,5×10′. Solution EXAMPLE Solution A copper wire has a resistance of 0.5 0.

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 .

How does area and length affect resistivity?

First, the total length of the wires will affect the amount of resistance. The longer the wire, the more resistance that there will be. Second, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area.

How is resistance resistivity length and cross-sectional area related?

Resistance is proportional to resistivity and length, and inversely proportional to cross sectional area.

What is the resistance of an aluminum rod 3.0 m long and 1.0 cm in diameter?

the resistance of a rod with a length of 3.0m and a diameter of 1.0cm is 56.0 ohms. of this rod is stretched to form a wire with a diameter of 0.01cm, what is its resistance? assume that in the process of stretching the rod, its volume did not change. R 2 = 56 ⋅ 1 4 0.0 1 4 = 5.6 G Ω .