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How do you find the magnetic force acting on a 3m-long current-carrying section of wire of...

How do you find the magnetic force acting on a 3m-long current-carrying section of wire of a given length if it sits in an external magnetic field (current = .01 Amps, magnetic field = .00002 teslas)? In what orientation(s) does it have to be placed to feel this force? The moving charges on the wire also produce a magnetic field of their own, how do I calculate this magnetic field at a distance of 1 meter from the wire? (if the current in the wire points upwards on a wire right in front of you, what is the direction of the magnetic field if you measure it near your eyes?)

For the first part would you use the equation, F=ILBsin(theta)?

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