Answer:
1.25 kA
Step-by-step explanation:
The magnitude of the magnetic field produced by a current-carrying wire is given by:

where
is the vacuum permeability
is the current in the wire
r is the distance from the wire at which the field is calculated
In this problem, we have:
is the intensity of the magnetic field
is the distance from the wire
Re-arranging the equation, we can find the intensity of the current in the wire:
