Flashcards in Chapter 24 Deck (11):

1

## Phasors: Resistor

### V in phase with I

2

## Phasors: Capacitor

### V lags behind I by 90 degrees

3

## Voltage across R is ALWAYS (in phase/ out of phase) with current through R

### In phase

4

## Phasor facts

###
- vectors whose length is the maximum of V or I

- rotate around an origin with the angular speed of the oscillating current

5

## The instantaneous value of V or I...

### The projection of the phasor on the y axis

6

## Phasors: Inductor

### V leads I by 90 degrees

7

## Define: phasor

### A vector whose magnitude is the maximum value of a quantity and which rotates counterclockwise in a 2-d plane with angular velocity w

8

## Presistor/avg =

### = Isqrms R

9

## Loop equation (capacitor)

###
VsubC = Q/C = €subm sinwt

>>> Q = C €subm sinwt

>>> IsubC = [dC/dt] = wC€subm coswt

10

## Voltage across C lags current through C by...

### One-quarter cycle (90degrees)

11