Q19.4c What should be
the drift velocity of
electrons at different
locations in this circuit,
in the steady state?
On the left diagram,
draw arrows
representing the steady
state electron drift
velocity at each “x”.
Q19.4d Given this
pattern of drift velocity,
what should the electric
field be at the locations
inside the wire marked
x?
On the left diagram,
draw arrows
representing the electric
field at each location
marked "x".
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Q19.4e Assume that
initially the only excess
charges are the ones
on the battery, as
shown.
On the right diagram,
at each “x”, draw an
arrow representing the
electric field due ONLY
to the charges on the
battery.
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Q19.4f Given this
pattern of electric
field, what would the
electron drift velocity
be at the locations
inside the wire
marked x?
On the right diagram,
draw arrows
representing the
electron drift velocity
at each location
marked "x".
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Question 19.4g
In the next tiny fraction of a
second, what will happen at
the LEFT bend in the wire?
1) Nothing will change
2) The LEFT bend will become
negative
3) The LEFT bend will become
positive
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Question 19.4h
Since the wire is a conductor,
where will the excess negative
charge of the LEFT bend be
located?
1) Inside the wire
2) On the surface of the wire
3) Both inside the wire and on
the surface of the wire
Question 19.4i
In the same tiny fraction of a
second, what will happen at
the RIGHT bend in the wire?
1) Nothing will change
2) The RIGHT bend will become
negative
3) The RIGHT bend will become
positive
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Question 19.4j
Since the wire is a conductor,
where will the excess positive
charge of the RIGHT bend be
located?
1) Inside the wire
2) On the surface of the wire
3) Both inside the wire and on
the surface of the wire
Question 19.4k
RIGHT bend is positive, LEFT bend is negative, so…
At location 4, what is the
direction of E due only to the
charges on the surfaces of
the bends?
1) Esurface = 0
2) Esurface to the right
3) Esurface to the left
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Question 19.4k’
What makes current flow in a circuit?
1) Electrons push each other through the wire
2) Since there is no friction, no force is needed to keep electrons
moving
3) A nonzero electric field inside the wire keeps the electrons
moving
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