4. A point mass m with positive charge q is suspended from the ceiling by a thread. Nearby, a charged object causes the point charge q to deflect from the vertical. Our task will be to find the angle of deflection in various cases. (Refer to Table at right.) c) Finally, suppose that the nearby object is a long positively charged line, with uniform linear charge density A, located a horizontal distance D away. a) First suppose that the nearby object is another positive point charge Q, located a horizontal distance D away. D fixed line charge (perpendicular to plane of page) m, q Find the angle of deflection 0. * D Electric fields created by various fixed point charge m. a
4. A point mass m with positive charge q is suspended from the ceiling by a thread. Nearby, a charged object causes the point charge q to deflect from the vertical. Our task will be to find the angle of deflection in various cases. (Refer to Table at right.) c) Finally, suppose that the nearby object is a long positively charged line, with uniform linear charge density A, located a horizontal distance D away. a) First suppose that the nearby object is another positive point charge Q, located a horizontal distance D away. D fixed line charge (perpendicular to plane of page) m, q Find the angle of deflection 0. * D Electric fields created by various fixed point charge m. a
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Please answer a, b and c.
Transcribed Image Text:4. A point mass m with positive charge q is
suspended from the ceiling by a thread.
Nearby, a charged object causes the point
charge q to deflect from the vertical. Our task
will be to find the angle of deflection in
various cases. (Refer to Table at right.)
c) Finally, suppose that the nearby object is a
long positively charged line, with uniform
linear charge density A, located a horizontal
distance D away.
a) First suppose that the nearby object is another
positive point charge Q, located a horizontal
distance D away.
D
fixed line charge
(perpendicular to plane of page)
m, q
Find the angle of deflection 0. *
Electric fields created by various
charged objects
Q
fixed point charge
m, q
Find the angle of deflection 0.
Shape of Strength of E-
charged
object
field greated
by object
Note
b) Next suppose that the nearby object is a large
positively charged sheet, with uniform surface
charge density o, located a perpendicular
distance D away.
"r" refers to
distance from
Point
E(r) =
4.TE,r?
charge Q
the point
charge.
Infinite
straight
line of
charge,
uniform
linear
charge
density A
" refers to
perpendicular
distance from
E(r)
m, q
2TE,r
the line
uniformly
charged sheet
charge.
Find the angle of deflection 0.
E-field
Infinite
flat sheet
of charge,
uniform
surface
strength is
independent
of distance
from the
sheet and the
direction
E(r) = ;
280
charge
density o
points away
from the
sheet.
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