3. Suppose that you have a current that drops off with time such that I (t) %3D where Io is the current at time t = 0 and T is a constant. (a) How long docs it take the current to fall to 1/3 of it's maximum value? (b) What is the total charge that flows through the current from timet = 0 until t = 0? (c) How long does it take for half of the charge you found in part b to flow?

A solar cell, 3.0 cm square, has an output of 350 mA at0.80 V when exposed to full sunlight. A solar panel thatdelivers close to 1.3 A of current at an emf of 120 V to anexternal load is needed. How many cells will you need tocreate the panel? How big a panel will you need, and howshould you connect the cells to one another?

1) so that the current varies by less than 10% as the load resistance (R) changes from 200 to 500N. The current must be at least 1.5 mA. For V = 10 Volts, find a resistance R which will meet these criteria. You want to make a current source from a battery (V) and resistor (R) R I V- RL

If the current in a wire of a CD player is 4.99 mA, how long would it take for 2.01 C of charge of pass through a cross-section area of this wire?