AIIMS 2018 Physics Biot-Savart Law MCQ Question

The Biot-Savart law describes the magnetic field generated by a steady electric current, analogous to how Coulomb’s law describes the electric field produced by stationary charges. Both laws establish a relationship between a source (current or charge) and the resulting field (magnetic or electric) at a point in space, following an inverse square law dependence. Option B, Ohm's law, relates voltage, current, and resistance in electrical circuits, while option C, Kirchhoff's laws, pertain to the conservation of charge and energy in electrical circuits, making them unrelated to the fundamental principles of magnetism.