Question
In: Physics
If the radius of the coils is 50 cm, what would be the (peak) magnetic field...
If the radius of the coils is 50 cm, what would be the (peak) magnetic field at the center of a single coil loop? (Show work.)
Use the concept of electromagnetic induction to explain why the light bulbs in the chandelier light up. Recall that they are in the presence of a strong, rapidly changing magnetic field!. The chandelier is not plugged in, so presumably the filaments in the light bulb are not part of any closed circuit. Yet there appears to be a current flowing through them all the time. How is this possible? (Hint: think AC!)
Solutions
genius_generous answered 2 years agoRelated Solutions
A circular conducting loop with radius 2.70 cm is placed in a uniform magnetic field of...
A circular conducting loop with radius 2.70 cm is placed in a
uniform magnetic field of 0.680 T with the plane of the loop
perpendicular to the magnetic field, as shown. The loop is rotated
180° about the axis in 0.242 s.
1.What is the direction of the induced current flow as the loop
begins to rotate?
2.What is the average induced emf in the loop during this
rotation?
A circular wire loop of radius 1.4 cm is placed in a magnetic field of magnitude...
A circular wire loop of radius 1.4 cm is placed in a magnetic
field of magnitude 2.3 T. If the magnetic field goes to zero in a
time of 5 s, what is the magnitude of the current induced in the
loop? The wire has a diameter of 2 mm, and the resistivity of
copper is 1.7 x 10-8 Ohm-m.
A 123 turn circular coil of radius 2.27 cm is immersed in a uniform magnetic field...
A 123 turn circular coil of radius 2.27 cm is immersed in a
uniform magnetic field that is perpendicular to the plane of the
coil. Over an interval of 0.167 s , the magnetic field strength
increases from 54.5 mT to 94.1 mT . Find the magnitude of the
average emf avg induced in the coil during this time interval, in
millivolts.
Helmholtz coils are a method developed to provide a uniform magnetic field in a small region....
Helmholtz coils are a method developed to provide a uniform
magnetic field in a small region. They are constructed by placing
two identical wire loops parallel to each other, separated by a
distance equal to their radii, as shown in the Figure. Assume that
the two loops are also connected in parallel to a power supply, so
that they produce the same field.
(a) Find the length of a 28-gauge copper wire that will produce a
75 Ω coil.
m...
Radius (m) Radial Magnetic Field (μT) Axial Magnetic Field (μT) 0 3.0 + .2 31 +...
Radius (m)
Radial Magnetic Field
(μT)
Axial Magnetic Field
(μT)
0
3.0 + .2
31 + 2
0.01
2.5 + .1
32 + 2
0.02
1.3 + .07
33 + 2
0.03
2.4 + .1
34 + 2
0.04
-3.8 + .2
36 + 2
0.05
-5.0 + .3
34 + 2
0.06
-12.0 + .3
37 + 2
0.07
-17.0 + .9
44 + 2
0.08
-16.0 + .8
51 + 3
0.11
-30 + 2
-60 + 3...
A loop of wire has a radius of 2.0 cm and is in a constant magnetic...
A loop of wire has a radius of 2.0 cm and is in a constant
magnetic field of 0.88 T directed into the plane of the paper. If
the loop collapses so the radius of the circle shrinks to zero in a
time of 0.35 s, a) find the magnitude of the average induced emf in
the loop. b) If the loop is part of a larger circuit, in which
direction does the induced current flow as the loop closes.
What is the difference between the magnetic field of the bar magnet and the magnetic field...
What is the difference between the magnetic field of the
bar magnet and
the magnetic field of the solenoid? (also in terms of
how the lines and direction should differ)
Find the radius of an electron's orbit when it moves perpendicular to a magnetic field of...
Find the radius of an electron's orbit when it moves
perpendicular to a magnetic field of 0.46 T with a speed of
6.29×105 m/s .
Express your answer using two significant figures.
A hydroelectric with 0.2 m radius coils has permanent magnets that immerse the coils in a...
A hydroelectric with 0.2 m radius coils has permanent magnets
that immerse the coils in a magnetic field of 0.5 T. If the maximum
torque that the turbines can produce is 750 Nm and it is sought to
generate a maximum voltage of V = (1414.3 V) sin (wt) at an average
rms power of 2x10 ^ 4 W. a) What maximum current the turbine should
generate, b) how many turns should the coil have, c) what radius
should the...
A hydroelectric with 0.2 m radius coils has permanent magnets that immerse the coils in a...
A
hydroelectric with 0.2 m radius coils has permanent magnets that
immerse the coils in a magnetic field of 0.5 T. If the maximum
torque that the turbines can produce is 750 Nm and it is sought to
generate a maximum voltage of V = (1414.3 V) sin (wt) at an average
rms power of 2x10 ^ 4 W. a) What maximum current the turbine should
generate, b) how many turns should the coil have, c) what radius
should the...
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