9. What is the clectric potential at P due to charges Q, and Qz? 1.0 m 0.50 m Q- 1.0 μC QQ-4.0 μC %3D

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tion
WCLN.c
PHYSICS 12
9. What is the clectric potential at P due to charges Qr and Q2?
1.0 m
0.50 m
Q- 1.0 μC
Q2 = 4.0 µC
(ans: 5.4 x 2
10. How much kinetic energy will an electron gain (in joules) if it falls through a potential differen
of 275 V?
AKE VE
4.40 x10-
(ans: 4.4 x 10"
11. An electron in the picture tube of an old television set is accelerated from rest through a potentia
difference Va+5000V.
a. What is the change in potential energy of the electron? (ans: -8.0 x 1016 J)
ADE:
27
=1-6x 1O
19
x5000
8-0 x 1016J
b. What is the speed of the electron as a result of this acceleration? (ans: 4.2x 10 m/s)
ne ve
8x 10-16
ver
2*S*10-14
ve 4.2X10'
mis
Transcribed Image Text:tion WCLN.c PHYSICS 12 9. What is the clectric potential at P due to charges Qr and Q2? 1.0 m 0.50 m Q- 1.0 μC Q2 = 4.0 µC (ans: 5.4 x 2 10. How much kinetic energy will an electron gain (in joules) if it falls through a potential differen of 275 V? AKE VE 4.40 x10- (ans: 4.4 x 10" 11. An electron in the picture tube of an old television set is accelerated from rest through a potentia difference Va+5000V. a. What is the change in potential energy of the electron? (ans: -8.0 x 1016 J) ADE: 27 =1-6x 1O 19 x5000 8-0 x 1016J b. What is the speed of the electron as a result of this acceleration? (ans: 4.2x 10 m/s) ne ve 8x 10-16 ver 2*S*10-14 ve 4.2X10' mis
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