PhysicsEasy226×since 2002Q6514Space between two concentric conducting spheres of radii a and b (b > a) is filled with a medium of resistivity ρ\rhoρ. The resistance between the two spheres will be :Aρ2π(1a+1b){\rho \over {2\pi }}\left( {{1 \over a} + {1 \over b}} \right)2πρ(a1+b1)Bρ4π(1a+1b){\rho \over {4\pi }}\left( {{1 \over a} + {1 \over b}} \right)4πρ(a1+b1)Cρ2π(1a−1b){\rho \over {2\pi }}\left( {{1 \over a} - {1 \over b}} \right)2πρ(a1−b1)Dρ4π(1a−1b){\rho \over {4\pi }}\left( {{1 \over a} - {1 \over b}} \right)4πρ(a1−b1)Check answerSkip