Inside a conducting sphere with charge Q and radius R, the electric potential is given by V = and outside it is given by V = "ex, Using E, = - dv derive an expression for the magnitude of the dr electric field inside and outside the sphere. (Use the following as necessary: k, Q, r and R.) (a) inside E, = (b) outside E(r > R) = Need Help? Read It

A spherical conductor has a radius of 14.0 cm and a charge of 62.0 µC. Calculate the electric field and the electric potential at the following distances from the center. (а)r %3D 8.0 сm magnitude MN/C direction electric field there is no direction electric potential there is no direction This would be correct if the charge were located at the origin. MV (b) r = 26.0 cm magnitude direction electric field MN/C ---Select--- electric potential MV ---Select--- (c) r = 14.0 cm magnitude direction electric field 28.47 MN/C outward electric potential 3.98 MV ---Select---

(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 9.00 cm²? nC (b) Find the maximum charge if nylon is used between the plates instead of air. nC

(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 7.00 cm2?nC(b) Find the maximum charge if neoprene rubber is used between the plates instead of air.nC

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NEW General HI Q Q ↓ Close 5. The figure shows a charged dielectric sphere centered at the origin and touches an infinite line of charges at x=4 m. The charged line extends along the z-axes as shown. Find the magnitude of the electric field (in N/C) at x=3 m. z (m) y (m) Q= 10 nC X=4 m X (m). Infinite line charge with A= 4 nC/m A) 3.22 B) 50.1 C) 72 D) 67.8 E) 4.2 Image 11:36 AM 6185 Sunny 4× DEU 13

The potential of the field inside a charged ball of radius R dependsonly from the distance to its center r according to the law φ=ar+b  where a and b areconstants. Find: a) the electric field E inside the ball; b) bulk charge density ρ; charge of the ball Q.