1.

Two concentric, thin metallic spheres of radii R_(1) and R_(2) (R_(1) gt R_(2)) charges Q_(1) and Q_(2) respectively Then the potential at radius r between R_(1) and R_(2) will be (k = 1//4pi in)

Answer»

`K((Q_(1) + Q_(2))/(R))`
`K((Q_(1))/(r)+(Q_(2))/(R_(2)))`
`k((Q_(2))/(r)+(Q_(1))/(R_(1)))`
`k((Q_(1))/(R_(1))+(Q_(2))/(R_(2)))`

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