1. Consider the three-dimensional conductor in the figure, which has a hole in its interior. The conductor has an excess charge 1.7 μC on it.
a) What is the electric flux through the Gaussian surface S1 shown in the figure?
b) Now put a point of charge 21.5 μC inside the cavity of the conductor. What is the flux sian surface S1?
c) Now consider the Gaussian surface S2. With the charge still inside the cavity, what is the flux through this surface?
2. Suppose a point charge creates a 7500 N/C electric field at a distance of 0.4 m.
a) What is the magnitude of the point charge in C?
b) How large is the field at 10 m in N/C?