NEET Physics Biot-Savart Law MCQ Question
In a diagram illustrating the Biot-Savart law, a current element I d l produces a magnetic field dB at a distance r. If the plane contains vectors d l and r, and you imagine moving from d l towards r in a clockwise direction, what is the direction of the resultant field?
Into the page
Out of the page
Along the plane
Opposite to the direction of r
Correct Answer
Detailed Explanation
According to the right-hand screw rule, if the movement from d l to r is clockwise, the resultant field direction is away from you, which is into the page.
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