Homework Problem 5.5 A region of space contains an electric field E = -yxx where y 300 N/cm. The field points in the negative r direction. Compute the potential difference,
AVab (including the appropriate sign)between the point a 1m and the point 6= 2m along the r-axis. (а) +450 V (b) +900 V (с) -900 V (d) -450 V