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9. Find the capacitance of a spherical capacitor. Use Gauss Law to find the electric field between the inner sphere of radius “a” and the outer sphere of radius "b". Then use Faraday's Law to find the potential difference between the spheres by integrating the electric field along a line from "a" to "b".finally use the definition of capacitance_C=Q/V to find the capacitance.

Fig: 1