Physics - Capacitor Question with Solution | TestHub

Two long straight wires with equal cross-sectional radii a are located parallel to each other in air. The distance between their axes equals $b$. If the mutual capacitance of the wires per unit length under the condition $\mathrm{b}\gg \mathrm{a}$.is given by following relation then find the value of X ?

$$\frac{X\pi {\epsilon }_0}{2\ln \left(\frac{b}{a}\right)}$$