- The figure above shows a pair of long, straight current-carrying
wires and four marked points. At which of these points is the net
magnetic field zero?
(A) Point 1 only
(B) Points 1 and 2 only
(C) Point 2 only
(D) Points 3 and 4 only
(E) Point 3 only- A nonconducting sphere is given a nonzero net electric charge,
+Q, and then brought close to a neutral conducting sphere of the
same radius. Which of the following will be true?