Electrical Engineering - Capacitors - Discussion
Discussion Forum : Capacitors - General Questions (Q.No. 11)
11.
A 4.7 M
resistor is in series with a 0.015 
F capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?
resistor is in series with a 0.015 F capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?Discussion:
20 comments Page 1 of 2.
Siva said:
1 decade ago
Fully charges when t=5rc
Muhammad Azam Farooq said:
1 decade ago
Yes because capacitor always charge in 5 time constant.
Prateek said:
1 decade ago
Why 5 time constant?
How decide there is 5 put ?
How decide there is 5 put ?
Vijay desai said:
1 decade ago
The time constant is five time greater when the capacitor is said to be fully charged. t = 5rc.
Vikash said:
1 decade ago
Please tell me solution.
Rajkumar said:
1 decade ago
Explain it?
Fazl hamad said:
1 decade ago
Dear fellow,
Usually time taken by a rc series circuit is T(TAU) = RC, but after 5 times of this time taken constant value.
The voltage across capacitor charges or discharges completely and and circuit seeks a steady state. The time taken is called transient period.
Usually time taken by a rc series circuit is T(TAU) = RC, but after 5 times of this time taken constant value.
The voltage across capacitor charges or discharges completely and and circuit seeks a steady state. The time taken is called transient period.
Gailb said:
10 years ago
t = 5*4.7*0.015 = 0.352 sec = 352 ms.
Singh said:
10 years ago
Sir please tell me a complete answer.
Vishu said:
9 years ago
4.7 X .015/12 = .005875 X 60 =.352 sec.
=> 352ms.
=> 352ms.
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