According to Kirschhoff's Junction Law, if a junction has four wires connected to it, and two of the wires are bringing in a current of 8 A and 12 A respectively, which of the following would be correct estimation for the amount of current leaving through the remaining two wires a
20 A and 4 A
b
5 A and 12 A
c
9 A and 10 A
d
13 A and 7 A

The two metal spheres in the figure are connected by a metal wire with w switch in the middle. initially the switch is open. sphere 1, with the larger radius, i'd given a positive charge. sphere 2, with the smaller radius, is neutral. then the switch is closed. afterward, sphere 1 has charge q1, is at potential v1 and the electric field strength at its surface is e1. the values for sphere 2 are q2, v2, and e2. a. is v1 < ,> , or = to v2? explain. b. is q2 < , > , or = explain? c. is e1 < ,> ,or = to e2? explain?