6.17 How many electrons will pass through a cylindrical copper wire of diameter 0.8 mm in 3.0 s, if the wire has a current density of 1.55 x 105 A/m22
6.17 How many electrons will pass through a cylindrical copper wire of diameter 0.8 mm in 3.0 s, if the wire has a current density of 1.55 x 105 A/m22
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 81CP: A 10-gauge copper wire has a cross-sectional area A=5.26mm2 and carries a current of I=5.00A . The...
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Question 6.17 and 6.26 only!!
Transcribed Image Text:.. 6.28 Two identical
have a curent of 2
of radius 1.50 mm run parallel to each other, with
e a plot of the magnitude of the total magnetic
field B vs. x for
b mm for when the currents run (a) parallel to
ONICS
. PROBLEMS 3MARO
281
2000 T pointing north. What magnetic force (magnitude and direction) does it
perience if it is traveling at
iameter
a) 350.0 m/s to the east?
current
b) 350.0 m/s to the west?
as in the
) 350.0 m/s to the north?
problem
(d) 350.0 m/s to the south?
(e) 350.0 m/s upward?
nd and a
(6) 350.0 m/s downward?
Le electric
length of
se sides of
h the foil?
6.26 An ionized helium nucleus (charge of +2e) experiences a magnetic field
15.0 T pointing north. What magnetic force (magnitude and direction) does it
Rperience if it is traveling at
(4) 290.0 m/s at 30° east of north?
10) 290.0 m/s at 45° south of west?
a tightly-
5.0 cm. If
nd apply a
of the
sume room
shape it to
cm. If you
-ly a voltage
nagnetic field at a distance of
resistance as
6.3.2:
(6.125)
sistor remain
we will see
depicted in Figure P.6.2. They each
their
5.0 mm, as
central axes se
o each
nductor:
176)
Cach other an
ed, a wi
Ap ele
75 mm has a current of 30.0
ing at 175,0
Transcribed Image Text:voltage of 1.00 V, what current will pass through the foil? (Again, assume room
form a cylinder of length 0.5 ft and a cross-sectional diameter of 6.0 cm. If yo
temperature.) Then, suppose you bend this cylinder in half, and reshape ir
packed cylinder of length 1.0 ft and a cross-sectional diameter of 3.0 cm.
the sheet and apply a voltage of 1.00 V, what current will pass through the ful
6.17 How many electrons will pass through a cylindrical copper wire of diameter
you now attach wires to the opposite circular ends of the cylinder and apply
6.22 Now let's suppose you roll up this sheet of aluminum foil into a tight|)
CHAPTER 6. ELECTRONIC
280
0.8 mm in 3.0 s, if the wire has a current density of 1.55 × 105 A/m22
. 6.18 An extension cord of length 15.0 ft. and diameter 0.25 in carries a cu
of 10 A at room temperature. What is the average speed of the electrons in te
cord?
6.19 What electric field is required to create the current in the previous problen
if the cord is made out of copper?
6.20 A wire of length 0.78 m experiences a voltage of 1.50 V at one end anda
voltage of 7.94 V at the other end. What is the average magnitude of the electr
field applied to the wire?
of
6.21 You tear off a sheet of aluminum foil with a width of 1.0 ft, a leng
3.0 ft, and a thickness of 1.0 mm. If you attach wires to the two large
exp
..
(a
(Assume room temperature.)
(b-
• 6
of th
(a)
(b)
(c)
of 1.00 V, what current will pass through the foil?
(d)
a function.
Lin Section 6.3.2:
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