engineering recuitment BHEL Engineer Trainee Mock Test 2025 Electromagnetic Theory Electrostatics Electrostatic Field
Differential and Integral form of Gauss's law for electric field respectively are
1
∇ . E = ρ & \(\smallint E.nds = \frac{Q}{{{\varepsilon _0}}}\)
2
∇ . D = ρ & \(\smallint D.nds = Q\)
3
∇ . D = ρ & \(\smallint D.nds = \frac{Q}{\epsilon_0}\)
4
∇ . D = ρ & \(\smallint E.nds = Q\)