일반물리학 2 · Capacitance · Problem 43
일반물리학 2 — Capacitance: Problem 43
43 A charged isolated metal sphere of diameter 15 cm has a potential of 6500 V relative to V = 0 at infinity. (a) Calculate the energy density in the electric field near the surface of the sphere. (b) If the diameter is decreased, does the energy density near the surface increase, decrease, or remain the same?
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