railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Electrostatics Electrostatic Field
An electrostatic field is said to be conservative, when -
1
the divergence of the field is equal to zero.
2
the curl of the field is equal to zero.
3
the curl of the field is equal to – \(\frac{\delta^2E}{\delta t^2}\).
4
the Laplacian of the field is equal to \(\mu\epsilon \frac{\delta^2 E}{\delta t^2}\).