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Current Electricity question

2019 · 10 Apr · Shift 2 · Q59
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Current Electricity question

2019 · 10 Apr · Shift 2 · Q59

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
Space 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 :
  1. A
    ρ2π(1a+1b){\rho \over {2\pi }}\left( {{1 \over a} + {1 \over b}} \right)2πρ​(a1​+b1​)
  2. B
    ρ4π(1a+1b){\rho \over {4\pi }}\left( {{1 \over a} + {1 \over b}} \right)4πρ​(a1​+b1​)
  3. C
    ρ2π(1a−1b){\rho \over {2\pi }}\left( {{1 \over a} - {1 \over b}} \right)2πρ​(a1​−b1​)
  4. D
    ρ4π(1a−1b){\rho \over {4\pi }}\left( {{1 \over a} - {1 \over b}} \right)4πρ​(a1​−b1​)
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