STANDARDPhysics-Magnetism
STANDARD Physics Biot-Savart Law MCQ Question
Type: MCQ-conceptual-Medium
Biot-Savart law indicates that the moving electrons (velocity v) produce a magnetic field B such that
A
B ⊥ v
B
B ∥ v
C
it obeys inverse cube law.
D
it is along the line joining the electron and point of observation.
Correct Answer
Option A
Detailed Explanation
Magnetic field produced by charges moving with velocity v, at a distance r is B = (μ₀/4π) (qv × r̂)/r². Therefore, B ⊥ v.
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