Right hand rule - Magnetic field

[Lee33]

Homework Statement

Conventional current flows in a ring in the direction indicated in the diagram (if you stand at location A, on the +x axis, and look toward the ring, current flows clockwise). At each of the locations labeled by a letter, use the right hand rule to find the direction of the magnetic field at that location, due to the current in the ring.

Homework Equations

Right hand rule

The Attempt at a Solution

I already know the answers, which was given to me:

Location A = -x
Location B = +x
Location C = -x
Location D = +x
Location E = +x
Location F = +x

But I don't know how to apply the right hand rule to find the direction of the magnetic field? Can anyone explain it to me thoroughly, please?

 

[LeonhardEu]

It's just like any other cross product. AxB
Step 1: You put your open palm with your fingers pointing in the same direction as the first vector A ( in your example it is I)
Step 2: Without moving anything but your fingers, point to the direction of the point whose magnetic field you examine.
Step 3: The magnetic field at this point is given by the direction of your extended thumb without moving your hand.
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