How does the cross-sectional area of A wire affect its 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 do you find the cross-sectional area of A wire with resistance?

where R is the resistance of a wire, l length of the wire and A stands for the cross-sectional area of the wire. ρ=RAl. The cross-sectional area of the wire A is the area of a circle of radius r, or of diameter d = 2r: A=πr2=π(d2)2.

Does resistance increase with cross-sectional area?

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.

Does resistance depend on cross section?

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.

How does cross sectional area affect electrical resistance?

Second, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area. Water will flow through a wider pipe at a higher rate than it will flow through a narrow pipe. This can be attributed to the lower amount of resistance that is present in the wider pipe.

How to calculate the cross sectional area of a wire?

Wire Cross-Sectional Area. The formula to find the cross-sectional area of the wire in kilo-circular mils, or kcmil, is: area (kcmil) = 1000 × diameter 2. The formula to find the cross-sectional area of the wire in square millimeters is: area (mm 2) = (π ÷ 4) × diameter 2.

How is the cross section of a wire related to resistance?

The cross section area A. Resistance is inversely proportional to cross section area. The material of the conductor. the thickness of the wire decreases. An electric current flows when free electrons move in one direction through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal.

How to calculate the cross sercional area of a N gauge wire?

The n gauge wire’s cross sercional area A n in square inches (in 2) is equal to pi divided by 4 times the square wire diameter d in inches (in): An (in2) = (π/4)× dn2 = 0.000019635 in 2 × 92 (36-n)/19.5 The n gauge wire’s cross sercional area A n in square millimeters (mm 2)…