Triple Gun Assembly (R,B,G beams) of a color television tube

1
Triple Gun Assembly (R,B,G beams) of a color
television tube
2
-
As this electron enters the E-field, it
will 1) speed up. 2) slow down. 3)
maintain constant speed.
3
-
As this electron enters the E-field, Its path
will be deflected (nudged) 1) up. 2)
down. 3) neither,only accelerated forward.
4
Electron Gun
0.3 cm
-e
2 centimeters
vo 8.4?107 m/sec me
9.11?10-31 kg 1e 1.60?10-19 C Emax
?
5
vo
0.3 cm
-e
2 centimeters
The time each individual electron spends between
the two plates
1. 2. 3. 4. 5. 6.
6
vo
0.3 cm
-e
2 centimeters
x voxt ½axt2 y voyt ½ayt2
0
0
7
Concept Review
A man lifts a 5 kg rock 1 meter off the ground.
The potential energy of the rock is about 1) 5
J 2) 50 J 3) 100 J 4) 500 J
h 1 m
8
Concept Review
A man lifts a 5 kg rock 1 meter off the ground.
The potential energy of the rock is about 1) 5
J 2) 50 J 3) 100 J 4) 500 J
h 1 m
About how much work did the man have to do? 1)
5 J 2) 50 J 3) 100 J 4) 500 J 5)
cannot answer from the information given
9
Concept Review Test
The balls in the figure are identical. When
released from rest, which has a greater kinetic
energy when it gets to the bottom of its
ramp? 1) 2) 3) both the same
10
Electric Energy

• A proton and an electron are each accelerated
  over the same distance across a region of
  constant electric field, E. Which experiences
  the greater acceleration?
• (1) proton
• (2) electron
• (3) both have equal acceleration
• (4) neither, there is no acceleration at all

11
Electric Energy

• A proton and an electron are each accelerated
  over the same distance across a region of
  constant electric field, E. Which experiences the
  bigger increase in Kinetic Energy?
• (1) proton
• (2) electron
• (3) both have the same increase in KE
• (4) neither -- KE 0 for both

12
Work q
Electric Potential Difference V
?PE q
13
Electron Gun
Heated filament
Positively charged can
E 800,000 N/C d 2.5 cm, 1e 1.60?10-19
C vfinal?
14
Electric Potential
1
3

• Which point has the largest potential?

Q
2
4
5
15
Electric Potential
A
C
Q
B
D
E
Which two points have the same potential? (1) A
and C (2) B and E (3) B and D (4) C
and D (5) no pair
16
ConcepTest

A
B
If the electric potential at point A is Vo, then
the electric potential at point B is 1) ¼Vo 2)
½Vo 3) Vo 4) 2Vo 5) 4Vo
17
ConcepTest

A
B
If the electric potential at point A is Vo, then
the electric potential at point B is 1) ¼Vo 2)
½Vo 3) Vo 4) 2Vo 5) 4Vo
If the magnitude of the electric field at point A
is Eo, then the electric field at point B is 1)
¼Eo 2) ½Eo 3) Eo 4) 2Eo 5) 4Eo
18
Answers to preceding Multiple Choice questions
1) speed up. 2) down. 1) 2) 50 J 2) 50 J 3)
both the same (2) electron 5) has the largest
potential (4) C and D 2) ½Vo 1) ¼Eo