NEET Physics Biot-Savart Law MCQ Question
Consider a diagram showing a current element I d l and a point P at a distance r from the element. If the angle between d l and r is 90°, which of the following correctly describes the direction of the magnetic field dB at point P?
Perpendicular to both d l and r, directed into the plane.
Parallel to d l, directed towards the current element.
Parallel to r, directed away from the current element.
Perpendicular to d l, directed towards point P.
Correct Answer
Detailed Explanation
According to the Biot-Savart law, the direction of dB is given by the cross-product d l × r, which is perpendicular to both vectors and follows the right-hand rule.
Found an issue with this question?
Related Questions
More from
What phenomenon did Hans Christian Oersted discover regarding a current-carrying wire?
What is used to convert a galvanometer into an ammeter?
What does Ampere's Law state about the relationship between the magnetic field and the total current through a closed loop?