Two charged concentric spherical shells have radii 3 cm and 6 cm. The charge on the inner shell
Two charged concentric spherical shells have radii 3 cm and 6 cm. The charge on the inner shell is 5.0 x 10°C, and that on the outer shell is 2.0 x 10-6 C. What will be the electric field at r = 10 cm?
6.3 x 106 N/C
1.79 x 108 N/c
4.49 x 106 N/C
none of these