- #1
suppo
- 5
- 0
Im a first year electrical apprentice and I can't work out the area for resistance. The formula is R = PL/A :eg 20mm by 9mm conductor the answer has to be in meters squared can you show me the formula please?
The term "P x L/A" represents the perimeter (P) multiplied by the length (L) divided by the cross-sectional area (A). This is used to calculate the resistance area, which is a measure of the resistance of a material to the flow of electricity.
The resistance area is calculated by first determining the perimeter and length of the material, and then dividing the product of these values by the cross-sectional area. This will give the resistance area in units of ohms.
The resistance area is important in scientific research because it helps determine the conductivity of a material, which is a crucial factor in understanding its electrical properties. This information is necessary for a wide range of applications, from designing electronic circuits to studying the behavior of materials in various environments.
The resistance area directly affects the flow of electricity. The higher the resistance area, the more difficult it is for electricity to flow through a material. This is because a larger resistance area means there is more resistance to the movement of electrons, leading to a decrease in current flow.
Yes, the resistance area can be changed by altering the dimensions of the material or by changing the material itself. For example, increasing the length or cross-sectional area of a wire will increase its resistance area, while using a different material with a higher or lower conductivity will also affect the resistance area. Additionally, external factors such as temperature can also impact the resistance area of a material.