Two concentric spherical conducting shells of radii 'a' and 2a are initially given charges +2Q and +Q respectively as shown. The total heat dissipated after switch 'S' has been closed is (where `k=(1)/(4piepsilon_(0))`)

Two concentric conducting shells of radii R and 2R are having charges Q and -2Q respectively.In a region r

Three concentric spherical conducting shells A, B and C of radii a, 2a and 4a are initially given charges +Q, -2Q and +Q respectively. The charge on the middle spherical shell B after switches S_(1) and S_(2) are simultaneously closed, will be

Three concentric spherical conducting shells A, B and C of radii a, 2a and 4a are initially given charges +Q, -2Q and +Q respectively. The charge on the middle spherical shell B after switches S_(1) and S_(2) are simultaneously closed, will be

Two concentric spherical conducting shells of radii R and 2R carry charges Q and 2Q respectively.Change in electric potential on the outer shell when both are connected by a conducting wire is (k=(1)/(4 pi varepsilon_(0)))

Two concentric spherical conducting shells of radii R and 2R carry charges Q and 2Q respectively.Change in electric potential on the outer shell when both are connected by a conducting wire is (k=(1)/(4 pi varepsilon_(0)))

Two concentric spherical conducting shells of radii r and R (r lt R ) carry charges q and Q respectively . The two shells are now connected by a conducting wire. The final charge on the inner shell is

Three concentric spherical shells A, B and C having uniformly distributed total charges +Q, -2Q and +Q respectively are placed as shown. The potential at the centre will be -

Three concentric spherical shells A, B and C having uniformly distributed total charges +Q, -2Q and +Q respectively are placed as shown. The potential at the centre will be -

Two concentric spherical conducting shells of radii R and 2R are carrying charges q and 2q, respectively. Both are now connected by a conducting wire. Find the change in electric potential (inV) on the outer shell.