Now let us consider a point charge of 1 mC in a nonconductive liquid, dielectric constant = 80ε0. 3. Suppose the point charge is bare. At a point 10 cm away, what is the D field and E field strength? 4. Suppose the point charge is enclosed in a floating (ungrounded) sphere of perfect conductor. At a point 10 cm away, what is the D field and E field strength? 5. Suppose the point charge is enclosed in a grounded cube of perfect conductor. At a point 10 cm away, what is the D field and E field strength? Figs. 1,2 Metal 原谅 T Dielectric