Q. 25.0( 2 Votes )

A current 10 A is established in a long wire along the positive z-axis. Find the magnetic filed . At the point (1m, 0, 0).

Answer :


Given:
Current : I = 10 A

Point is located along x-axis at 1 m.
Formula used:
Using Ampere’s Law for a current carrying straight wire:
Here, B is the magnitude of magnetic field, μ0 is the permeability of free space and μ0= 4π × 10-7 T mA-1 and d is the distance between the current carrying wire and the required point.
Substituting the values,

B = 2× 10-6 T
Hence, magnetic field at a point (1m, 0, 0) is
2× 10-6 T.


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