During the first 2.0s of operation, an electronic device draws the piece-wise constant current shown below.
Time interval (s) | Current (A)
0.00–0.50 | 3.0
0.50–1.00 | 2.4
1.00–1.50 | 1.9
1.50–2.00 | 1.5
Assuming the current remains constant within each interval at the listed value, calculate the approximate total charge that passes through the device during the 2.0s interval. Give your answer in coulombs.