Two very large concentric spherical shells of radii a=113m and b=373 m carry uniform charges Q and -Q as shown in the figure below. If the electric field between the shells is E = k- r2 where Q=9µC, determine the potential difference between the shells; V(a)-V(b)=? Express your answer in units of Volts using zero decimal places. Please do not forget a minus sign if your answer is negative. Take the value of Coulomb constant as k=9x109 N.m2/c2. Hint: here the unit vector ↑ is radially outward. b'

Two very large concentric spherical shells of radii a=113m and b=373 m carry uniform charges Q and -Q as shown in the figure below. If the electric field between the shells is E = k- r2 where Q=9µC, determine the potential difference between the shells; V(a)-V(b)=? Express your answer in units of Volts using zero decimal places. Please do not forget a minus sign if your answer is negative. Take the value of Coulomb constant as k=9x109 N.m2/c2. Hint: here the unit vector ↑ is radially outward. b'