What is the voltage across a capacitor after being charged from a 100 V source for a period of one time constant?
I google n get, after the first interval, the capacitor voltage equals 63.2% of the battery voltage. so answer I got is 63.2. Is it right?There is a formula for that. Do you know what it is?
A key piece of information that will help you is the definition of Time Constant.
Thanks!Yup.
Time constant. For RC circuit its RC.Next question.
How long would it take for the capacitor to charge to the battery voltage?
Thanks! error for n=5 is 99.3%Five time constants is not the correct answer (but is a good answer if you supply an error criteria). See the answer given by wmodavis.
As an exercise, calculate the percent error from fully charged for n time constants (for n = 1 to 10).
What is the error for n = 5 and n= 6?
You are very welcome.
Note that the error at n = 5 is 100 - 99.3 = 0.7%
n = 6, error = 0.2%
n = 7, error = 0.1%
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