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In an arrangement of two concentric cond...

In an arrangement of two concentric conducting shells, with centre at origin and radii a and b `(a lt b)`, charges `Q_(1) and Q_(2)` are given to inner and outer shell, then the potential V at a distance r from the origin is `(r lt a )`

A

`V= ( kQ_(1))/(a) + ( kQ_(2))/(b)`

B

`V= ( kQ_(1))/(r) + ( kQ_(2))/(a)`

C

`V= ( kQ_(1))/(a) + ( kQ_(2))/(r)`

D

`V= k((Q_(1)+Q_(2)))/(r )`

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