Question

A very long straight wire carrying an electric current is perpendicular to the x-y plane. The current has a value of 31.1 A and is directed in the +z (out of the page). At point 'p', the magnetic field B is represented by one of the arrows.

:wire 1p :: ? 2 1 0 1 2 3 4 5 6 7 8 9 1O x (cm)


1. Indicate the direction of the magnetic field at point 'p'.

2. Calculate the magnitude of the B-field at 'p'.

3. Calculate the y-component of the B-field at 'p'.

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