Nichrome Resistance Calculator

Formula

The formula to calculate the resistance of a nichrome wire (R) is:

\[ R = \frac{p \cdot L}{A} \]

Where:

\(R\) is the resistance (ohms)
\(p\) is the resistivity of nichrome (150 \times 10^{-8} \, \text{ohm-meters})
\(L\) is the length of the wire (meters)
\(A\) is the cross-sectional area of the wire (square meters)

Resistance of Nichrome Definition

Nichrome material has a resistivity of \(150 \times 10^{-8}\) ohm-meters, so the total resistance will be determined by the diameter and the length of the wire.

Example Calculation

Let's assume the following values:

Length of Wire (L) = 2 meters
Cross-Sectional Area (A) = 0.0001 square meters

Using the formula to calculate the Resistance (R):

\[ R = \frac{150 \times 10^{-8} \cdot 2}{0.0001} = 0.003 \, \text{ohms} \]

The Resistance (R) is 0.003 ohms.