MCQ
Two infinitely long parallel wires having linear charge densities ${\lambda _1}$ and ${\lambda _2}$ respectively are placed at a distance of $R$ metres. The force per unit length on either wire will be $\left( {K = \frac{1}{{4\pi {\varepsilon _0}}}} \right)$
- A$K\frac{{2{\lambda _1}{\lambda _2}}}{{{R^2}}}$
- ✓$K\frac{{2{\lambda _1}{\lambda _2}}}{R}$
- C$K\frac{{{\lambda _1}{\lambda _2}}}{{{R^2}}}$
- D$K\frac{{{\lambda _1}{\lambda _2}}}{R}$
