1 Answer
The formula for the resistance $R$ of a wire is:
$$
R = \frac{\rho L}{A}
$$
Where:
* $R$ = resistance (in ohms, $\Omega$)
* $\rho$ = resistivity of the material (in ohm-meters, $\Omega \cdot \text{m}$)
* $L$ = length of the wire (in meters)
* $A$ = cross-sectional area of the wire (in square meters)
This formula shows that resistance increases with length and decreases with greater cross-sectional area. Would you like help applying this to a specific wire or material?
$$
R = \frac{\rho L}{A}
$$
Where:
* $R$ = resistance (in ohms, $\Omega$)
* $\rho$ = resistivity of the material (in ohm-meters, $\Omega \cdot \text{m}$)
* $L$ = length of the wire (in meters)
* $A$ = cross-sectional area of the wire (in square meters)
This formula shows that resistance increases with length and decreases with greater cross-sectional area. Would you like help applying this to a specific wire or material?