Cross Sectional Area Of A Wire Formula

Resistance r 50 ω length l 2 m diameter 0 6 mm therefore the radius would be 0 3 mm 3 10 4m resistivity rho.

Cross sectional area of a wire formula. The area in circular mils a of a circle with a diameter of d mils is given by the formula. A n d 2 π 4 0 7854 n d 2. Area mm2 π 4 diameter2.

D 2 r diameter of the wire or cable. R radius of the wire or cable. If it is a square circle or a triangle the calculation is simple but if it s a complex shape you may have to break it down into simpler ones for the purpose of calculation.

Because a wire is essentially a cylinder and the cross section of a cylinder is a circle the cross sectional area of a wire can easily be calculated using the equation for the area of a circle. Depending on the shape of the cross section the formula for its area calculation will be different. Cross section area of single wire.

The formula to find the cross sectional area of the wire in square millimeters is. Area kcmil 1000 diameter2. Commercially available wire cable size as cross sectional area.

If the cutting plane is parallel to one of the two sets the sides the cross sectional area is instead given by l h or w h. Q1 find out the resistivity of the metal wire of 2 m length and 0 6 mm in the diameter if its resistance happens to be 50 ω. Knowing the dimensions of the object you can easily calculate.

As the definition of the unit contains π it is easy to calculate area values in circular mils knowing the diameter in mils. It is a unit intended for referring to the area of a wire with a circular cross section. The formula to find the cross sectional area of the wire in kilo circular mils or kcmil is.