While rebuilding the circuitry in her computer, Fabiola switches out a connecting conducting wire for a new one which is longer, has a higher resistivity, and has a larger cross-sectional area. What happens to the resistance of this connection? a. The resistance increases. b. The resistance decreases. c. The resistance remains the same. d. More information is needed.

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.