Capacitors in AC

  • Thread starter skylines
  • Start date
  • #1
3
0
what happens if AC is applied to a capacitor?

I am able to understand that ,For 1st half of the cycle,i.e for +ve cycle, during the voltage rise from v0 to vpeak, the capacitor charges, and during the voltage drop from vpeak to v1 the capacitor discharges.Let me know if this is true.

I assume
v0 as the intial voltage at an angle 0
vpeak as the highet voltage at an angle 90
v1 as the voltage at an angle 180 i.e voltage at the end of the +ve half cycle.

And also let me know what happens during -ve half cycle?
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,836
252
welcome to pf!

hi skylines! welcome to pf! :smile:

the charge of a capacitor behaves the same as the voltage …

they go up and down exactly together (whether it's AC or not)

since current is the derivative of charge, current in sinusoidal AC is always 90° ahead of voltage :wink:
 

Related Threads on Capacitors in AC

  • Last Post
Replies
1
Views
2K
Replies
3
Views
9K
  • Last Post
Replies
1
Views
6K
  • Last Post
Replies
7
Views
4K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
22
Views
2K
  • Last Post
Replies
5
Views
13K
  • Last Post
Replies
3
Views
2K
Replies
4
Views
4K
Replies
4
Views
3K
Top