A conducting sphere of radius R1 carries a charge Q. Another conducting sphere has a radius of R2= 2R1, but carries the same charge. The spheres are far apart. The ratio E2/E1 of the electric field near the surface of the sphere with radius R2 to the find near the surface of the sphere with radius R1 is most nearly? (please show use of 4piR^2)
A. E2/E1 = 2
B. E2/E1 = square root of 1/2
C. E2/E1 = 1/4