Digital Electronics - Multivibrators and 555 Timer - Discussion

Discussion Forum : Multivibrators and 555 Timer - General Questions (Q.No. 2)
2.
When a capacitor charges:
the voltage across the plates rises exponentially
the circuit current falls exponentially
the capacitor charges to the source voltage in 5×RC seconds
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Pavithra said:   9 years ago
When the circuit current falls exponentially?

Yadwinder Singh said:   1 decade ago
In 5RC it is nearly equal to supply voltage.
To get same voltage it requires infinite time.

Yadwinder Singh said:   1 decade ago
Time constant is RC seconds in which it reaches 63% of Max. voltage(Supply Voltage)

Vijay said:   1 decade ago
hello this is vijay,
capacitor charges but time constant..is it 5*rc?

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