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## Homework Statement

Calculate the magnitude and direction of the magnetic field 25cm to the east of a straight vertical wire with a current of 12A downward through the air.

## Homework Equations

B = u(I / 2*pi*r)

## The Attempt at a Solution

Finding the magnitude is simple, but finding the direction is giving me difficulty.

The magnitude is 9.6E-6 T, and the direction is South. How is the direction South?