1. The problem statement, all variables and given/known data #1 A power source produces a "sawtooth" wave of current, reversing direction at 1s. After 2s (The current starts at 0, reaches 1 amp at 1 second, reverses direction to -1 amp, and then reaches 0 again at 2 seconds), calculate the total energy supplied to a 5000 ohm resistor. #2 Different measurements are taken by attaching various resistors R across a cell terminal and recording the voltages and corresponding currents I. From the graph, find (a) the open circuit voltage of the cell. (b) the short-circuit current (c) the maximum power that the cell can deliver to an external resistance. The graph is a negative linear line. V on the x-axis, I on the y-axis. The starting point is at () V, 3 amps) and the end point is at (1 V, 0 amps). 2. The attempt at a solution #1 - Energy = C (charge) x V, so I'm tempted to say that energy is zero because the current is positive for the first second and negative for the second, thus they should cancel. #2 - I'm not sure what the open/short circuits are referring to... could anyone clarify? As for c, power P = V*I, but at what point is this maximum?