Here's the question you clicked on:
sirenitabaila
In what direction are the magnetic field lines surround a strait wire carrying a current that is moving directly away from you?
|dw:1332092056479:dw| I know this is the answer, but can someone explain it to me?
aha! I got it.. nvm haha.. thumb is direction of current and you grab the wire with the thumb pointed in that direction thus the B field is clockwise or on the left out of the page, right into the page
Oersted discovered the moving of a compass needle nearby a current carrying metal wire.
and chose the right hand rule as convention for positive current and north pole relation
so your own answer is correct, i gave you medal at the question
sirenitabaila you'r right
|dw:1332102184036:dw| the direction of tangent on the curve gives the direction of the magnetic field.....