The current in a conductor varies in time as shown in the figure below.

$($a$)$ How many coulombs of charge pass through a cross section of the conductor in the interval from $t=0$ to $t=10\mathrm{.}0s?$ C

$($b$)$ What constant current would transport the same total charge during the $10\mathrm{.}0-$s interval as does the actual current?

A