Question

An isolated charged conducting sphere has a radius R = 11.0 cm. At a distance of r = 20.0 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)

6. 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 30.0 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

Answer 1