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An isolated charged conducting sphere has a radius R = 11.0 cm. At a distance of...

An isolated charged conducting sphere has a radius R = 11.0 cm. At a distance of r = 25.0 cm from the center of the sphere the electric field due to the sphere has a magnitude of E = 4.90 ✕ 104 N/C.

(a) What is its surface charge density (in µC/m2)?

___ µC/m2

(b)

What is its capacitance (in pF)?

____ pF

(c) What If? A larger sphere of radius 23.0 cm is now added so as to be concentric with the first sphere. What is the capacitance (in pF) of the two-sphere system?

____ pF

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