Can someone explain me what happen in this step? Circuits 1

Click For Summary
SUMMARY

The discussion revolves around the phase shift in trigonometric functions, specifically in the context of electrical circuits. The user inquires about the transition from a sine function to a cosine function in the equation for current, which is represented as xc = vm/im. The explanation clarifies that this change is due to a phase shift of π/2, which is a common occurrence in circuit analysis when dealing with alternating current (AC) signals.

PREREQUISITES
  • Understanding of trigonometric functions, specifically sine and cosine.
  • Basic knowledge of electrical circuits and alternating current (AC) theory.
  • Familiarity with phase shifts in waveforms.
  • Ability to interpret circuit equations and their components.
NEXT STEPS
  • Study the concept of phase shifts in AC circuits.
  • Learn about the relationship between sine and cosine functions in signal processing.
  • Explore the implications of using different trigonometric functions in circuit analysis.
  • Investigate the role of integration in deriving circuit equations.
USEFUL FOR

Students studying electrical engineering, circuit designers, and anyone interested in understanding the mathematical principles behind AC circuit analysis.

sammyqw
Messages
20
Reaction score
0

Homework Statement


http://imgur.com/tQR7Jdt
tQR7Jdt.png

Homework Equations


xc= vm/im

The Attempt at a Solution


http://imgur.com/a/RwIUA
zpEVacj.png

Can someone please explain where did they get that pi/2 ? did they integrate 2cos(10t)or something? Thanks
 
Last edited by a moderator:
Physics news on Phys.org
They changed the trig function used to describe the current from a sine function to a cosine function. This just involves a phase shift.
 
thank you i see now
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 25 ·
Replies
25
Views
3K
  • · Replies 9 ·
Replies
9
Views
2K