Biot-Savart law indicates that the moving electrons (velocity v) produce a magnetic field B such that
A
B
C
It obeys inverse cube law.
D
It is along the line joining the electron and point of observation.
Text Solution
Verified by ExpertsThe correct answer is:
A
According to Biot-Savart law
Where, 
Magnetic field Produced
Velocity of charged particle
Position vector of point with respect to charge
Magnetic permeability of free space
It is a cross product 
and 
Is perpendicular to 
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