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just part a please

2. A solid conducting sphere has charge Q uniformly distributed over it surface.
а.
Which graph best represents the magnitude of the electric field as a function of r?
E
E
E
E
E
R
R
2R
r
2R
r
2R
r
R
2R
R
2R
r
b. Which graph best represents the voltage as a function of r? Think about your result from 1f.
V
V
V
V
V
2R
3R
R
2R
r
3R
2R
3R
R
2R
r
3R
R
2R
3R

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