After two time constants of time have elapsed, the current in the circ

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TravisBoyd
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After two time constants of time have elapsed, the current in the circuit is how many times the final current?
 
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?I think you need to clarify, as I have no idea what you're talking about.
 
TravisBoyd said:
After two time constants of time have elapsed, the current in the circuit is how many times the final current?

You're going to need to show at least some kind of effort to solve this. Tell me, what's a time constant? When do we use it in a circuit?
 
Does this involve caps and time dependent analysis? Or can you clue me in as to the subject or topic of this question?