Question -
Answer -
Current in the wire, I =50 A
A point is 2.5 m away from theEast of the wire.
Magnitude of the distanceof the point from the wire, r = 2.5 m.
Magnitudeof the magnetic field at that point is given by the relation, B
Where,
= Permeabilityof free space = 4π × 10–7 T m A–1
The point is located normal tothe wire length at a distance of 2.5 m. The direction of the current in thewire is vertically downward. Hence, according to the Maxwell’s right hand thumbrule, the direction of the magnetic field at the given point is verticallyupward.