9B. A metal sphere of radius R and charge Q is surrounded by concentric metallic spherical shell of inner radius R1 > R, outer R1 > R1 and load Q1 . This system is surrounded by another concentric metallic spherical shell of inner radius R2 > R₁', outer R2 > R2 and of load Q2 . To find the intensity of the electric field Ě (ř) ☐☐ at each position ŕ, that is for r≤R, R

The electric flux through a spherical Gaussian surface of radius r=20.0cm, with a uniformly charged, spherical conducting shell at its center, is ΦE =−2.30 × 104 N·m2/C. T c. How many excess electrons or protons does this sphere contain? d. f the conductor has a radius of R = 10.0 cm, what is its surface charge density? e. What is the electric field strength at the surface of the conductor?

In the figure shown, the inner sphere carries a charge of Qa=5.42nC and the outer spherical shell carries a charge of Qc=4nC. Both shells are concentric and conducting. The radii of the the shells are: a=1.94cm, b= 24.49cm and c-32.91cm. Determine the magnitude of the electric field a distance r=14.18cm from the center of the sphere (in N/C). G + + a

4. A point charge q=+15.0µC is located at the origin. A hollow spherical conductor of inner radius a=0.0500 m and outer radius b=0.0950 m is concentric with the point charge, and has a net charge Q= -20.0µC. Using Gauss's law, derive the equation for the magnitude of the electric field as a function of r. a