Question: A circular annulus of inner radius r and outer radius R has a uniform charge density a. What will be the total charge on

A circular annulus of inner radius r and outer radius R has

A circular annulus of inner radius r and outer radius R has a uniform charge density a. What will be the total charge on the annulus? a) a*(R-r) b) *a*(R-r) c) a* (R-r) d) *a* R

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