Given the following sets of resistors and capacitors, rank the time it would tak

Question

Given the following sets of resistors and capacitors, rank the time it would take for them to charge (i.e. rank their time constants tau) if connected to a battery (the circles are the terminals). Longest time = _____ = Shortest time Network A is charged to 12 Volts across the capacitor. A wire is then connected between its two terminals and so its capacitor begins to discharge. After 0.1 seconds, the capacitor has 4 V across it. What is the voltage across the capacitor 0.3 seconds after it begins to discharge? You connect network B above to a battery of voltage V. If the two capacitors weren't identical (i.e., didn't have the same C), would they have the same voltage drop across them? Would they have the same charge on their plates? Justify your answer. You connect network C above to a battery of voltage V. If the two capacitors weren't identical (i.e., didn't have the same C), would they have the same voltage drop across them? Would they have the same charge on their plates? Justify your answer.

Explanation / Answer

Ansa) Time constant is given by t = RC

A t =RC

B t = 2RC

C t = RC/2

D t =2RC

B=D>A>C

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