Question

A total charge of 6. 3* 10-8c is distributed uniformly througout a 2. 7 cm radius sphere. The volume charge density is

Answer 1

`{ \rm{charge \: density = (charge)/(volume) }} \\ \\ { \rm{ = \frac{6.3 * {10}^( - 8) }{( (4)/(3)\pi {r}^(3)) } }} \\ \\ = { \rm{ \frac{6.3 * {10}^( - 8) }{( (4)/(3) * 3.14 * {0.07}^(3)) } }} \\ \\ = { \rm{ \frac{6.3 * {10}^( - 8) }{0.00143675504024} }} \\ \\ = 4.38 * {10}^( - 5) \: c {m}^( - 3)`