Please help I have been stuck on this homework question for a long time!!

a)

What is the equivalent resistance of a 5 Q, a 10 Q and a 50 Q resistor connected in parallel?\fA straight conductor carries current into the screen as shown. What direction and shape are the magnetic field lines? Xclockwise circles around the conductor straight lines radiating out from the conductor shaped like a helix, coiling around the conductor straight lines, directed into the screen counter-clockwise circles around the conductor