How many volts will be across the capacitor at the second time constant?

[charmcaster.engg]

An 8 V power source is charging a capacitor. How many volts will be across the capacitor at the second time constant?

 

[Gryd3]

An 8 V power source is charging a capacitor. How many volts will be across the capacitor at the second time constant?

What is your attempted answer so far?

 

[LvW]

What is the first time constant? How do you define it for this task?

 

[davenn]

As usual this OP has given very little info and made no attempt at an answer

Please... no one else answer to the OP is forthcoming


Dave

 

[charmcaster.engg]

What is your attempted answer so far?

I google n get, after the first interval, the capacitor voltage equals 63.2% of the battery voltage. In the second time interval, the capacitor picks up 63.2%, not of the full of battery voltage, but 63.2% of the of the difference between the starting charge(5.056) and the battery voltage(8V). I am on right track to solve the question?

 

[Gryd3]

I google n get, after the first interval, the capacitor voltage equals 63.2% of the battery voltage. In the second time interval, the capacitor picks up 63.2%, not of the full of battery voltage, but 63.2% of the of the difference between the starting charge(5.056) and the battery voltage(8V). I am on right track to solve the question?

You sure are
Good job.

Of course, now that you know the magic numbers, you can play with the math to make it easier

 

[charmcaster.engg]

Thanks!