railway RRB Technician Grade 1 Mock Test 2024 Electromagnetic Theory Electrostatics Electrostatic Field
Electric field intensity E varies with distance r for a point charge as
1
\(E \propto \frac 1 {r^2}\)
2
\(E \propto \frac 1 {r}\)
3
\(E \propto \frac 1 {r^3}\)
4
\(E \propto \frac 1 {r^0}\)