Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Physics Electric Fields and Gauss' Law Applications of Gauss’s Law
Find the electric field outside the cylinder, a distance r from the axis using Gauss's law, if a long & straight wire is surrounded by a hollow metal cylinder whose axis coincides with that of the wire. The wire has a charge per unit length of λ, and the cylinder has a net charge per unit length of 2λ?
1
\(\frac{{2\lambda }}{{2\pi {\varepsilon _0}r}}\) radially outward
2
\(\frac{{3\lambda }}{{2\pi {\varepsilon _0}r}}\) radially inward
3
\(\frac{{3\lambda }}{{2\pi {\varepsilon _0}r}}\) radially outward
4
\(\frac{{2\lambda }}{{2\pi {\varepsilon _0}r}}\) radially inward
5
Question Not Attempted