engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electric Fields and Gauss' Law Applications of Gauss’s Law
An infinitly long wire is charged uniformly with charge density λ and placed in air, the electric field at distance r from wire will be:
1
\(\frac{1}{4\pi \varepsilon_0} \frac{\lambda}{r}\)
2
\(\frac{1}{4\pi \varepsilon_0} \frac{\lambda}{r^2}\)
3
\(\frac{\lambda}{2 \varepsilon_0} \)
4
\(\frac{\lambda}{2\pi \varepsilon_0r} \)