Question

QUESTION 5

1. A 0.45 m metal pole moves 0.11 m in a direction that is perpendicular to a 0.80 T magnetic field in a time of 0.036 s. Assuming the club acceleration is zero, determine the "emf" on the club.

a. 0.27 V

b. 9.1 x 10 ^ -5 V

c. 0.076 V

d. You cannot determine without knowing the orientation of the club relative to the magnetic field

e. 1.1 V

QUESTION 6

1. The units for "fem" can be written as:

a. T m / s

b. V (m ^ 2) / s

c. T m

d. J / s

e. kg (m ^ 2) / (C s ^ 2)

QUESTION 7

1. A 0.50 T magnetic field is perpendicular to the plane of a circular cable of radius 0.25 m. Determine the magnetic flux through the cable.

a 0 Wb

b. 0.20 Wb

c. 0.098 Wb

d. 0.049 Wb

e. 0.39 Wb

QUESTION 8

1. A coil of length 0.250 m and radius 0.0200 m consists of 120 turns of cable. Determine the magnitude of the magnetic field in the center of the coil when the current is 15.0 A.

a. 4.52 x 10 ^ -3 T

b. 9.05 x 10 ^ -3 T

c. 7.50 x 10 ^ -3 T

d. 2.26 x 10 ^ -3 T

e. 0 T

Answer #1

QUESTION 18
1. A magnetic field is perpendicular to the plane of a
rectangular cable with dimensions 0.15 m x 0.30 m that has 120
turns. To induce an average "emf" of -1.2 V in the cable, the
magnetic field is increased from 0.1 T to 1.5 T in a time interval
t. Determine t
a. 0.053 s
b. 1.6 s
c. 7.6 s
d. 6.3 s
e. 0.13 s
QUESTION 19
1. When a radio telescope observes a region...

#5. A coil 5.00 cm in radius, containing 250
turns, is placed in a uniform magnetic field that varies with time
according to:
B = (0.230 T/s)t + (4.00 x 10-5
T/s5)t5. The coil is connected to
a 450 ohm resistor, and its plane is perpendicular to the magnetic
field. The resistance of the coil can be
neglected. Find the induced emf in the coil as a
function of time. (20 pts.)

A 310 turn solenoid with a length of 23.0 cm and a radius of
1.60 cm carries a current of 1.85 A. A second coil of four turns is
wrapped tightly around this solenoid, so it can be considered to
have the same radius as the solenoid. The current in the 310 turn
solenoid increases steadily to 5.00 A in 0.900 s.
(a) Use Ampere's law to calculate the initial magnetic field in
the middle of the 310 turn solenoid....

Problem 9: Consider a generator
that rotates its 200 turn, 0.13 m diameter coil at 3550 rpm in a
0.75 T field.
Randomized Variables
d = 0.13 m
f = 3550 rpm
B = 0.75 T
Calculate the peak voltage of the generator.
ε0 = ___________
Problem 10: Suppose that a 0.375 m
radius, 500 turn coil produces an average emf of 10750 V when
rotated one-fourth of a revolution in 4.18 ms, starting from its
plane being perpendicular to...

1. An MRI technician moves his hand from a region of very low
magnetic field strength into an MRI scanner’s 2.00 T field with his
fingers pointing in the direction of the field.
Find the average emf induced in his wedding ring in mV, given
its diameter is 2.05 cm and assuming it takes 0.325 s to move it
into the field.
2. An emf is induced by rotating a 1000 turn, 25 cm diameter
coil in the Earth’s 5.00...

===================================================================
The various colors of visible light differ in:
a. its speed in a vacuum
b. frequency and its speed in a vacuum
c. wavelength only
d. frequency and wavelength
e. only in frequency
===================================================================
A radio station transmits radio waves that radiate uniformly in
all directions with power 1.50 x 10 ^ 5 W. Determine the intensity
of the waves when they are received by an antenna located 40.0 km
from the transmitting antenna.
a. 1.17 x 10 ^...

a) What is the radius of the circular path of a charge of 29.2 x
10-6 C and a mass of 2.29 x 10-9 kg moving
with a speed of 517 m/s perpendicular to magnetic field with a
magnitude of 0.28 ?
b) A positive charge of 327.3 x 10-6 C is moving
perpendicular to a uniform magnetic field of 1,940 T. What is the
magnitude of the magnetic force exerted on this charge if its speed
is 0.41 m/s?...

A point charge Q moves on the x-axis in the positive direction
with a speed of 480 m/s. A point P is on the y-axis at y = +60 mm.
The magnetic field produced at point P, as the charge moves through
the origin, is equal to -0.5 μT k^. When the charge is at x = +30
mm, what is the magnitude of the magnetic field at point P? (μ0 =
4π × 10-7 T · m/A)
a. The...

A particle with charge q = 6.0 nC and mass
m = 3.0×10−11 kg which is initially at rest
accelerates through a potential difference V = 100 V and
enters into a region 0 < x < d, where there is a
uniform magnetic field of magnitude B = 1.5 T with
direction perpendicular to the plane of the paper and inward. Use
the coordinate system shown in the figure to answer the following
questions. (Gravitational force on the particle...

1.
A rectangular loop of wire with sides 0.142 and 0.528 m lies in
a plane perpendicular to a constant magnetic field (see part
a of the drawing). The magnetic field has a magnitude of
0.604 T and is directed parallel to the normal of the loop's
surface. In a time of 0.104 s, one-half of the loop is then folded
back onto the other half, as indicated in part b of the
drawing. Determine the magnitude of the average...

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