1) A conducting sphere of radius 2.00 cm (0.020 m) has a charge of 1 micro C deposited on it. What is the magnitude of the electric field in N/C just outside the surface of the conducting sphere?
2) Eight identical spherical raindrops are each at a potential V, relative to the potential far away. They coalesce to make one spherical raindrop whose potential is:
A. V/8
B. V/2
C. 2V
D. 4V
E. 8V
3)Two parallel-plate capacitors with different capacitance but the same plate separation are connected in series to a battery. Both capacitors are filled with air. The quantity that is the same for both capacitors when they are fully charged is:
A. Potential difference
B. Stored energy
C. energy density
D. electric field between the plates
E. charge on the positive plate