RC Circuit

1
RC Circuit

• Important points to consider
•  
• common log 100 102 so, log10 100 2
• natural log 20 e3 so ln 20 3
•  
• Vo ? the supply voltage
• RC ? characteristic time constant  

The Problem A series circuit consists of R
50.0 M ?, C 6.00 ?F, and V 10.0 V DC. The
capacitor is initially discharged. When the power
supply is turned on (t 0), how long (in
seconds) will it take for the capacitor to charge
to 8.00 V?
2
For charging
Solve for t
3
This is similar to
So,