Question: The space between two concentric conducting spherical shells of radii b = 1.70 cm and a = 1.20 cm is filled with a substance of

The space between two concentric conducting spherical shells of radii b = 1.70 cm and a = 1.20 cm is filled with a substance of dielectric constant K = 23.5. A potential difference V = 73.0 V is applied across the inner and outer shells. Determine

(a) The capacitance of the device,

(b) The free charge q on the inner shell, and

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