You are given three pieces of wire that have different shapes (dimensions). you connect each piece of wire separately to a battery. the first piece has a length l and cross-sectional area a. the second is twice as long as the first, but has the same thickness. the third is the same length as the first, but has twice the cross-sectional area. rank the wires in order of which carries the most current (has the lowest resistance) when connected to batteries with the same voltage difference. rank the wires from most current (least resistance) to least current (most resistance).

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c