Correct answer is B. Current Y has a greater potential difference, and the charges flow at a slower rate.
Explanation
Current Y has a potential difference of 9 volts and current X has a potential difference of 1.5 volts. This tell us that current Y has a greater potential difference.
A current is the rate of low of charge. Current X is 7.8 A which is bigger than current Y which is 0.5 A. This tell us that current X flows faster than current Y.
From these statements, we conclude that Current Y has greater potential difference than current X and the charges in current Y flow at a slower rate. The correct answer is B.
Distance is 90km,time 1 hr distance 2 is 82km,time 5 hrs average speed=total distance travelled/total time taken. 90+82=172/5+1=6 average speed=28.7km over hour
