engineering recuitment HPCL Engineer Mock Test 2024 Electromagnetic Theory Electrostatics Electrostatic Field
A uniform volume charge density ρv C/m3 is distributed inside the region defined by a cylindrical surface of cross-sectional radius a. The electric field intensity at a distance r (< a) from the cylindrical axis is proportional to:
1
r
2
\(\frac{a}{r}\)
3
\(\frac{1}{{{r^2}}}\)
4
ar2