1. Two concentric metal spherical shells surround a spherical shell of conductivity o, with an inner radius a and outer

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1 Two Concentric Metal Spherical Shells Surround A Spherical Shell Of Conductivity O With An Inner Radius A And Outer 1 (41.24 KiB) Viewed 44 times

1. Two concentric metal spherical shells surround a spherical shell of conductivity o, with an inner radius a and outer radius b. (a) If the shells are maintained at a potential difference V, what current flows from one to the other? (b) What is the resistance between the shells? (c) Note that if b > a, the outer radius b is irrelevant. How do you account for that? Exploit this observation to determine the current flowing between two metal spheres, each of radius a, immersed deep in the sea and held quite far apart, if the potential difference between them is V. (This arrangement can be used to measure the conductivity of sea water.) tung