Physics-Biot-Savart Law

NEET Physics Biot-Savart Law MCQ Question

Type: MCQ-diagram based-Hard-Class 12

Consider a diagram illustrating the Biot-Savart Law where a current element I d l produces a magnetic field dB at a distance r. If the vectors d l and r are in the plane of the page, which direction will the magnetic field dB point?

Question diagram
A

Out of the page

B

Into the page

C

Parallel to r

D

Parallel to d l

Correct Answer

Option B

Detailed Explanation

According to the Biot-Savart Law, the direction of the magnetic field dB is determined by the right-hand screw rule, which indicates that if d l × r is clockwise, the magnetic field points into the page.

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