Two concentric spheres of radii `R` and `2R` are charged. The inner sphere has a charge if `1muC` and the outer sphere has a charge of `2muC` of the same sigh. The potential is `9000 V` at a distance `3R` from the common centre. The value of R isA. `1m`B. `2m`C. `3m`D. `4m`

Two concentric spheres of radii `R` and `2R` are charged. The inner sp

1.	Two concentric spheres of radii `R` and `2R` are charged. The inner sphere has a charge if `1muC` and the outer sphere has a charge of `2muC` of the same sigh. The potential is `9000 V` at a distance `3R` from the common centre. The value of R isA. `1m`B. `2m`C. `3m`D. `4m`
Answer» Correct Answer - A `V=1/(4piepsilon_0).q_1/(3R)+1/(4piepsilon_0).q_2/(3R)` `=q_"net"/((4piepsilon_0)(3R))` `:. R=(1/(4piepsilon))(q_"net")/(3V))` `=((9xx10^9)(3xx10^-6))/((3)(9000))` `=1m`

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Two concentric spheres of radii `R` and `2R` are charged. The inner sphere has a charge if `1muC` and the outer sphere has a charge of `2muC` of the same sigh. The potential is `9000 V` at a distance `3R` from the common centre. The value of R isA. `1m`B. `2m`C. `3m`D. `4m`

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