Questions A Y B C Do x+ B 91 D 92 • Elementary charge: 1.6 x 10-19 C 1 • k = 9.0 × 109 Nm² Απερ I y 2 Figure 1 Figure 2 Note: For questions on this page (which are worth 3 points each), make sure that you use the coordinate system shown in the diagrams to give the direction whenever appropriate! 1. In Figure 1 above, what is the direction of the electric field at point D if the charge at the origin is an electron? 2. In Figure 2 above, what is the direction of the electric field at the origin if q₁ is posi- tive and q2 is negative? 3. In Figure 2 above, what is the direction of the electric field at point B if q₁ is negative and q2 is negative? 4. In Figure 3 above, the lines indicate the direction of a uniform electric field. What is the direction of the force due to this field experienced by a positive charge q? 5. Consider calculating the electric field near a uniformly charged, thin plastic disc that had a radius of 10 cm and is lying flat on a table. Where above the table would the electric field due to the disc be vertical? Explain your thinking. T Z Figure 3 of boold Figure 4bolo 6. In Figure 4 above, the lines indicate the direction of a uniform electric field. What would happen to an electric dipole immediately after it is released in this field with its dipole moment aligned at an angle of 45° as shown in the diagram? 7. In a weird coincidence, a person driving a car sees lightning strike a tree next to the side of the road just as they drive by, and 10 seconds later another lightning strike hits another tree, again just as the they drive by that tree. Would another observer who also moved along a line parallel to the car but was moving at a speed of ẞ = 0.5 mea- sure the time between lightning strikes as 10s, more than 10 s, or less than 10s?
Questions A Y B C Do x+ B 91 D 92 • Elementary charge: 1.6 x 10-19 C 1 • k = 9.0 × 109 Nm² Απερ I y 2 Figure 1 Figure 2 Note: For questions on this page (which are worth 3 points each), make sure that you use the coordinate system shown in the diagrams to give the direction whenever appropriate! 1. In Figure 1 above, what is the direction of the electric field at point D if the charge at the origin is an electron? 2. In Figure 2 above, what is the direction of the electric field at the origin if q₁ is posi- tive and q2 is negative? 3. In Figure 2 above, what is the direction of the electric field at point B if q₁ is negative and q2 is negative? 4. In Figure 3 above, the lines indicate the direction of a uniform electric field. What is the direction of the force due to this field experienced by a positive charge q? 5. Consider calculating the electric field near a uniformly charged, thin plastic disc that had a radius of 10 cm and is lying flat on a table. Where above the table would the electric field due to the disc be vertical? Explain your thinking. T Z Figure 3 of boold Figure 4bolo 6. In Figure 4 above, the lines indicate the direction of a uniform electric field. What would happen to an electric dipole immediately after it is released in this field with its dipole moment aligned at an angle of 45° as shown in the diagram? 7. In a weird coincidence, a person driving a car sees lightning strike a tree next to the side of the road just as they drive by, and 10 seconds later another lightning strike hits another tree, again just as the they drive by that tree. Would another observer who also moved along a line parallel to the car but was moving at a speed of ẞ = 0.5 mea- sure the time between lightning strikes as 10s, more than 10 s, or less than 10s?
Chapter5: Electric Charges And Fields
Section: Chapter Questions
Problem 101P: In this exercise, you practice electric field lines. Make sure you represent both the magnitude and...
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Transcribed Image Text:Questions
A
Y
B
C
Do
x+
B
91
D
92
• Elementary charge: 1.6 x 10-19 C
1
• k =
9.0 × 109 Nm²
Απερ
I
y
2
Figure 1
Figure 2
Note: For questions on this page (which are
worth 3 points each), make sure that you use the
coordinate system shown in the diagrams to give
the direction whenever appropriate!
1. In Figure 1 above, what is the direction of
the electric field at point D if the charge at
the origin is an electron?
2. In Figure 2 above, what is the direction of
the electric field at the origin if q₁ is posi-
tive and q2 is negative?
3. In Figure 2 above, what is the direction of
the electric field at point B if q₁ is negative
and q2 is negative?
4. In Figure 3 above, the lines indicate the
direction of a uniform electric field.
What is the direction of the force due to
this field experienced by a positive charge
q?
5. Consider calculating the electric field near
a uniformly charged, thin plastic disc that
had a radius of 10 cm and is lying flat on
a table. Where above the table would the
electric field due to the disc be vertical?
Explain your thinking.
T
Z
Figure 3
of boold
Figure 4bolo
6. In Figure 4 above, the lines indicate the
direction of a uniform electric field.
What would happen to an electric dipole
immediately after it is released in this field
with its dipole moment aligned at an angle
of 45° as shown in the diagram?
7. In a weird coincidence, a person driving a
car sees lightning strike a tree next to the
side of the road just as they drive by, and 10
seconds later another lightning strike hits
another tree, again just as the they drive
by that tree. Would another observer who
also moved along a line parallel to the car
but was moving at a speed of ẞ = 0.5 mea-
sure the time between lightning strikes as
10s, more than 10 s, or less than 10s?
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