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e. 10 cm. -e. 1cm. e. Calculate E y here. Cathode Ray Tube Conducting Paper. C. +. B. +10 Volts. +. A. +. 0 Volts. E y. E x. +. -. V OUT. -. +. V IN. V OUT. V IN. V=8 volts. = 1cm. V=6 volts. V=4 volts. E=?. V=-2 volts. V=0 volts. V=2 volts. a. b. c. 6 V. d.

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slide1

e

10 cm

-e

1cm

e

slide2

Calculate

Ey here.

slide3

Cathode Ray Tube Conducting Paper

C

+

B

+10 Volts

+

A

+

0 Volts

slide4

Ey

Ex

+

-

slide5

VOUT

-

+

VIN

slide6

VOUT

VIN

slide7

V=8 volts

= 1cm

V=6 volts

V=4 volts

E=?

V=-2 volts

V=0 volts

V=2 volts

slide8

a

b

c

6 V

d

e

f

5 V

g

h

i

4 V

slide9

A.

B.

3 V

3 V

C.

3 V

slide10

3 C

-5 C

4 C

3 cm

slide11

3 C

-5 C

4 C

q

3 cm

slide12

3 C

-5 C

4 C

q

3 cm

slide13

3 V

6 V

1,000 

slide14

Baseball Diamond Heuristic

of Electrostatics Equations

slide15

RELATING IMPORTANT CONCEPTS

(vector)

(The force between 2 charges at a distance r from each other.)

(vector)

(scalar)

(The potential energy stored in having 2

charges at a distance r from each other.)

(Usually find with Gauss’s Law.)

(The change of electric potential a particle experiences moving from one position to another can be used to find the change in its kinetic energy via the “work-energy theorem”: K = W.)

(scalar)

(Remember: V, the electric potential, has units of energy per unit charge.)

Note: F, U, E, and V are all functions of position.

slide17

B.

3 V

3 V

C.

3 V

slide18

3 V

3 

2 

1 

slide19

3 V

3 

2 

1 

slide20

V

R1

R2

slide21

V

R1

VDMM

RDMM

V

VDMM

RDMM

slide22

3 V

3 

2 

1 

1 

slide23

100 

200

100 

10 

slide24

V

100 

200

100 

10 

slide25

V

R1

R2

slide26

3 V

3 

2 

1 

1 

2 

slide27

3 V

3 

2 

1 

1 

1 

2 

slide28

Reffective=?

R4=4 

I4=? V4=?

9 V

R1= 1 

R2= 2 

R3= 3 

IBattery=?

I1=? V1=?

I2=? V2=?

I3=? V3=?

slide29

t

V

S

C

O

P

E

slide30

Vmotor

on

on

on

on

off

off

off

off

off

Vmotor,on

t

t1

t2

Vresistor=|Vsource|-Vmotor

on

on

on

on

off

off

off

off

off

Vresistor,on

t

T

slide31

Voltage

(0.5 volts per div)

O

S

C

O

P

E

Time

(1 second

per div)

slide32

Y-axis: Voltage (0.5 volts per division)

1.5

O

S

C

O

P

E

X-axis: Time

(1 second

per division)

0

slide34

red1

R

+

red2

-

C

bottom

ground

slide35

R

VR (t) = -Vsource (t) = -VMAXsin(t)

Vsource (t) = VMAXsin(t)

where

VMAX = 5 Volts

/(2) = 1,000 Hz

slide36

Vsource (t) = VMAXsin(t)

where

VMAX = 5 Volts

/(2) = 1,000 Hz

slide37

red1

x-y

mode

Vamp=3 V

red2

CH1

CH2

330 

bottom

ground

slide38

red 1

red 1

100 

100 

+

+

red 2

(channel

inverted)

black

(bottom

ground)

black

(middle

ground)

red 2

-

-

200 

200 

slide39

R

Vsource (t)

C

slide40

S

C

O

P

E

slide41

Y-axis: Voltage (5 volts per division)

X-axis: Time

(3 millisecond

per division)

slide43

I

L

I

B

I

I

B

BFar is ~ zero

BClose is strong

Magnet

Magnet

Magnet

slide44

Beginning Position

180o Rotated Position

I

I

I

I

I

I

current direction

reversed (so is

force on wire)

slide45

I

I

slide46

DC Power Supply

+

-

I

these

wires

fixed

I

brushes

allow good

contact as

loop rotates

I

current direction

always the same (so

is force on wire)

slide47

A.

B.

C.

S

N

S

N

S

N

I

I

I

S

N

N

N

S

S

slide48

1.5 

A

4 V

0.5 

4 

1.5 

4 V

20 V

B

2.5 

slide49

A

1 

2 

2 

3 

BATTERY

12 V

1 

1 

2 

B

slide50

S

2 F

6 V

6 

2 

1 

slide51

S

N

Vvelocity

+/-Q?

slide52

S

N

Vvelocity

Direction of I ?

slide53

S

N

Vvelocity

Direction of I ?

slide54

S

N

Vvelocity

Direction of I ?

slide55

Vreceiver, amplitude

f

fmaximum

transmission

slide56

Iresistor,amplitude

fdrive

fresonance

slide57

Vsource amplitude = 15 V

fdrive = 750 Hz

R = 2,000 

C = 15 F

L = 75 mH

slide58

R [Ohm]

Vsource

C [Farad]

L [Henry]

slide60

C

L

slide61

Iresistor,amplitude

Same L and C with lower R

fdrive

fresonance

slide62

R

ground

red 1

C

red 2

red 1

R

red 2

ground

L

slide63

R

+

Vsource(t)=Vsource ampsin(Dt)

C

-

R

ground

+

red 1

C

-

red 2

slide64

Modulate Wave Transmitted by Diode to Speaker

Quantum mechanical

turn-on voltage of diode.

Pulses let through by the diode move speaker with

frequency of desired audio wave.

slide65

Function

Generator

RF

Modulator

Diode

OUT

IN

OUT

Speaker

Variable

Capacitor

slide66

Diode

Speaker

Solenoid A

Solenoid B

slide67

Diode

3,600

Speaker

slide68

(This is just to

provide a ground.)

RF

Modulator

external antenna

Diode

IN

GROUND

Speaker

Variable

Capacitor

slide69

W

H

D

I

P

d1

d2

I2

I1

slide70

1.0 meter

P

1.0 Amp

2.0 meter

2.0 Amp

slide71

Current carrying region 2.

Non-conducting

material

Current carrying region 1.

c

a

b

slide72

S

2 

2 

6 V

6 

1 

slide73

a

r

I

I

slide74

A.

B.

C.

S

N

S

N

S

N

S

N

N

N

S

S

slide76

D2

D1

slide77

Cartoon Frames

(use more frames if necessary)

slide78

-

+

constant

voltage

-

charge

separation

-

-

+

-

+

+

-

-

+

  • 30 V
  • Ground
  • 1000 V
  • 2000 V
  • 3000 V

to ground

slide79

Va(x)

200

100

xi

xf

x

-100

-200

slide80

-

-

+

+

{outward}

+

{upward}

-

{accelerated}

“{upward}” and “{outward}” describe

which way the electron is deflected.

slide81

-

Ea

+

-

+

Ed,h

Ed,v

+

-

slide82

coordinates

y

Vd Volts

x

z

d

0 Volts

w

vf,z

slide83

Vd Volts

d

0 Volts

w

vf,y

y

vf,z

y

x

coordinates

slide84

y

z

coordinates

Vd,y Volts

y’

vf,y

Dy

-

+

vf,z

y

d

-

+

0 Volts

Va

w

L

acceleration

in z-direction

acceleration

in y-direction

while crossing

deflection plates

constant motion

while crossing

remaining distance

to screen

slide85

Assessment #1

Assessment #2

(magnet)

(magnet)

(magnet)

S

S

B

N

B

B

OR

OR

(magnet)

B

N

slide86

V

I

slide87

I

V

slide88

ILED

(a non-Ohmic graph)

÷ R

Vapplied

(many various

applied V’s)

VTURN ON

slide89

VR

Vapplied

(many various

applied V’s)

slide90

R

Ithrough

slide91

Generic Plot of Energy Bands for Semiconductor

Energy (eV)

conduction band

(empty)

E is called Band Gap Energy

valence band

(filled with electrons)

Momentum

slide92

R

R

QCap(0)=Qo

C

QCap(∞)= 0

QCap(0)=0

Vsource

C

QCap(∞)= QMax

slide93

R

QCap(0)=0

Vsource

C

QCap(∞)= QMax

R

QCap(0)=Qo=2 [coul]

C

slide94

VCap(t)

Delineate vertical scale:

t

slide95

Algebraic Equation

Differential Equation

y+3 = 2

(involves coordinate y)

(involves a function y(t)

and it’s parameter t)

y = -1

(solution is a point/number)

(solution is a function of t)

…True!

(-1)+3 = 2

…True!

(check solution by plugging point

into original algebraic equation)

(check solution by plugging function

into original differential equation)

slide96

red 1

red 2

R

Vsource

black

motor

slide97

R

+

Vsource(t)=Vsource ampsin(Dt)

C

-

R

ground

+

red 1

C

-

red 2

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