Wire Resistance Calculator

Wire resistance calculator is a tool that helps to calculate the resistance of a wire based on its length, resistivity, and cross-sectional area.

The formula for Wire Resistance Calculator:

R = ρL/A, where R is the resistance, ρ is the resistivity, L is the length, and A is the area.

Example: Let’s say you have a wire with a length of 20 meters, a resistivity of 1.72 × 10^-8 Ω·m, and a cross-sectional area of 1.5 mm^2.

To calculate the resistance of the wire, you can use the wire resistance calculator and enter the values of length, resistivity, and area in the respective input fields. The result will be the wire resistance in ohms.

FAQs:

What is resistivity, and how is it related to wire resistance?

Resistivity is the intrinsic property of a material that determines its ability to conduct electric current. It is measured in ohm-meters (Ω·m). The higher the resistivity of a material, the more difficult it is for electric current to flow through it. Wire resistance is directly proportional to resistivity.

How does the length of a wire affect its resistance?

The longer the wire, the greater its resistance. This is because as the length of the wire increases, the number of collisions between electrons and atoms increases, which causes more resistance.

How does the cross-sectional area of a wire affect its resistance?

The greater the cross-sectional area of the wire, the lower its resistance. This is because a larger cross-sectional area means more space for electrons to move, which reduces the number of collisions between electrons and atoms, thus reducing resistance.