13-Choose the correct In a certain material there is a current of 16 A flowing through a surface to
the right, and there is an equal amount of positive and negative charge
passing through the surface producing the current. How
much negative charge passes through the surface?
a. 8 C/s toward the right
b. 8 C/s toward the left
c. 16 C/s toward the right
d. 16 C/s toward the left