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Help me(ASAP) electric potential problem?
1.) what is the electric potential difference between two coaxial metal cylindrical tubes separated by vacuum of inner radius a and outer radius b that carries +Q and - Q electric charge respectively on the surface of the cylinders? find it's capacitance ??
2.)two concentric spherical conducting shells are separated by vacuum. the inner shell has total charge +Q and outer radius and the outer shell has charge -Q and inner radius a. find the capacitance of this spherical capacitor??
1 Answer
- ?Lv 75 years agoFavorite Answer
I will answer in a few hours. Meanwhile try calculating E(r) between the cylinders and the V(r) from integration with respect to r. You will find V(b)-V(a) is proportional to log(b/a), with a and b the inner and outer radius. Of course, C = Q/delta(V)
