Question

Compare Biot-Savart law with Coulomb's law for electrostatic field.

Answer 1

1. According to coulomb’s law, the magnitude of electric field at any point depends only on the distance of the charge element from that point. According to Biot-Savart law, the direction of magnetic field is perpendicular to the current element as well as to the line joining the current element to the point.
   
2. Charge element dq producing electric field is a scalar whereas the current element Idl is a vector quantity having direction same as that of flow of current.