RC circuit (DC: charge/discharge)

Registed user can get files related to this applet for offline access.
Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
If java program did not show up, please download and install latest Java RUN TIME

The red dots represent the electrons.
The color of the capacitor is yellow (red+green) to represent neutral charge.
When electron enter one side of the capacitor, color for part of the region turn into red.
Another side of the capacitor lack of electron so it color turn into green.
You can charge the capacitor or discharge it.

For the charging cycle: $V_s=V_R+V_C=I R + \int \frac{I dt}{C}$ where V_s is the voltage from the power supply.
$0=R \frac{dI}{dt}+ \frac{I}{C}$ , $\frac{dI}{dt}=-\frac{I}{RC}$ , so the solution is $I(t)=I_0 e^{-t/(RC)}$
at $t=0, V_c=0$ so $I(t=0)=I_0=V_s/R$
The result is $V_R(t)=I(t) R =V_s e^{-t/(RC)}$ , V_c(t)=V_s-V_R(t)= V_s (1- e^{-t/(RC)})

Related Topics
	Subject	Started by	Replies	Views	Last post
	RLC circuit discharge simulation Request for physics Simulations	dsieron	5	18044	December 06, 2009, 03:10:04 pm by Fu-Kwun Hwang
	RLC circuit discharge simulation electromagnetism	ahmedelshfie	2	14525	April 16, 2010, 02:27:10 am by ahmedelshfie
	RC circuit (DC: charge/discharge) electromagnetism	ahmedelshfie	0	4457	April 29, 2010, 07:10:04 pm by ahmedelshfie
	Image charge: point charge and grounded plate electromagnetism	ahmedelshfie	0	3734	May 25, 2010, 02:30:24 am by ahmedelshfie
	RLC circuit discharge simulation electromagnetism	ahmedelshfie	0	6269	May 31, 2010, 06:36:32 pm by ahmedelshfie

	Author	Topic: RC circuit (DC: charge/discharge) (Read 23948 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).