Suppose the rate of change of the magnetic field applied to a loop of wire is...
Suppose the rate of change of the magnetic field applied to a loop of wire is increased by a factor of 3, and the wire loop's area is reduced by a factor of 3, what happens to the induced emf in the loop?
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It is reduced by a factor of 3 |
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It is reduced by a factor of 9 |
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It is increased by a factor of 3 |
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It it reduced by a factor of 9 |
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It remains the same |
Homework Answers
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Suppose the rate of change of the magnetic field applied to a
loop of wire is...
A circular loop of flexible conducting wire has an initial circumference of 150cm. This loop is...
A circular loop of flexible conducting wire has an initial
circumference of 150cm. This loop is in a uniform 1.5 T magnetic
field, which remains parallel to the loop's area vector. The loop
begins to shrink, decreasing the circumference at a rate of 5
cm/s.
A) Calculate the EMF around the loop 4 seconds after it begins
to shrink
B) Is the EMF increasing or decreasing with time?
C) Calculate the change in magnetic field required to keep the
EMF...
A uniform magnetic field is at right angles to the plane of a wire loop. The...
A uniform magnetic field is at right angles to the plane of a wire loop. The field decreases by 0.16 Tin 3.0×10−3 s and the magnitude of the average emf induced in the loop is 79 V . A) What is the area of the loop? (in m^2) B) What would be the value of the average induced emf if the field change was the same but took twice as long to decrease? (in Volts)
Section 3 A loop of wire sits in a uniform magnetic field, everywhere pointing toward you....
Section 3 A loop of wire sits in a uniform magnetic field, everywhere pointing toward you. Due to a changing magnetic flux through the loop, an induced current flows in the wire, clockwise as shown. The area ofthe loop is, 02 m, and the magnetic field initially has magnitude (a) Suppose that, over a time period of 123 -s, the magnetic field changes from its initial value, producing an average induced voltage of M v. What is the final value...
3. a) There is a magnetic field perpendicular to a 12-cm-radius loop of wire that mT/s....
3. a) There is a magnetic field perpendicular to a 12-cm-radius loop of wire that mT/s. What is the magnitude of emf induced around this loop during the field us loop of wire that is decreasing at a rate of 50 found this loop during the field decrease? b) If the field stops decreasing and remains constant at B = 18 mT, what is the ind = 18 mT, what is the induced emf now?
An emf is induced in response to a change in magnetic field inside a loop of...
An emf is induced in response to a change in magnetic field inside a loop of wire. Which of the following changes would increase the magnitude of the induced emf? A. reducing the diameter of the loop B. reducing the resistance of the wire of which the loop is made C. turning the plane of the loop to be parallel to the magnetic field D. changing the magnetic field more rapidly
1. A loop of wire passes through a constant magnetic field going out of the page....
1. A loop of wire passes through a constant magnetic field going out of the page. As the loop begins to enter the magnetic field what direction will the current be induced? Counter clockwise Into the page Out of the page In a zig zag around the earth Clockwise 2. Faraday’s low of induction states that the emf induced in a loop of wire is proportional to (magnetic flux)/(time) (time)/(magnetic flux) (magnetic flux)(magnetic field) (current)/(time) (magnetic flux)(area) 3. The number...
A 0.51 T magnetic field is perpendicular to a circular loop of wire with 53 turns...
A 0.51 T magnetic field is perpendicular to a circular loop of wire with 53 turns and a radius of 17 cm .If the magnetic field is reduced to zero in 0.10 s , what is the magnitude of the induced emf? Give answer in V
a wire loop of diameter 15 cm is inside a spatially uniform magnetic field of magnitude...
a wire loop of
diameter 15 cm is inside a spatially uniform magnetic field of
magnitude .5 T. with the field lines perpendicular to the face of
the loop. what is the magnitude if the emf induced in the loop of
the magnetic field drops uniformly to 0 T in 1 second
c) a and c a, b and c d) e) c Question 14 A wire loop of diameter 15 cm is inside a spatially uniform magnetic field of...
A loop of wire is at the edge of a region of space containing auniform magnetic...
A loop of wire is at the edge of a region of space containing
auniform magnetic field . The plane of the loop
isperpendicular to the magnetic field. Now the loop is pulled out
ofthis region in such a way that the area of the coil inside the magnetic field region
isdecreasing at the constant rate . That is, , with
.
Part AThe induced emf in the loop is
measuredto be . What is the magnitude of the magnetic...
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A =...
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A = 0.012[m) is constant, but the magnetic field is increasing at the rate of 0.020 T/s), determine the induced emf. (Use Faraday's law; the induced emf in a loop equals the absolute value of the time rate of change of the magnetic flux through the loop.) (b) If the total resistance of the circuit is 5.0(82), find the induced current. (c) Suppose we change the...
A circular loop of flexible conducting wire has an initial
circumference of 150cm. This loop is in a uniform 1.5 T magnetic
field, which remains parallel to the loop's area vector. The loop
begins to shrink, decreasing the circumference at a rate of 5
cm/s.
A) Calculate the EMF around the loop 4 seconds after it begins
to shrink
B) Is the EMF increasing or decreasing with time?
C) Calculate the change in magnetic field required to keep the
EMF...
Section 3 A loop of wire sits in a uniform magnetic field, everywhere pointing toward you. Due to a changing magnetic flux through the loop, an induced current flows in the wire, clockwise as shown. The area ofthe loop is, 02 m, and the magnetic field initially has magnitude (a) Suppose that, over a time period of 123 -s, the magnetic field changes from its initial value, producing an average induced voltage of M v. What is the final value...
3. a) There is a magnetic field perpendicular to a 12-cm-radius loop of wire that mT/s. What is the magnitude of emf induced around this loop during the field us loop of wire that is decreasing at a rate of 50 found this loop during the field decrease? b) If the field stops decreasing and remains constant at B = 18 mT, what is the ind = 18 mT, what is the induced emf now?
a wire loop of
diameter 15 cm is inside a spatially uniform magnetic field of
magnitude .5 T. with the field lines perpendicular to the face of
the loop. what is the magnitude if the emf induced in the loop of
the magnetic field drops uniformly to 0 T in 1 second
c) a and c a, b and c d) e) c Question 14 A wire loop of diameter 15 cm is inside a spatially uniform magnetic field of...
A loop of wire is at the edge of a region of space containing
auniform magnetic field . The plane of the loop
isperpendicular to the magnetic field. Now the loop is pulled out
ofthis region in such a way that the area of the coil inside the magnetic field region
isdecreasing at the constant rate . That is, , with
.
Part AThe induced emf in the loop is
measuredto be . What is the magnitude of the magnetic...
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A = 0.012[m) is constant, but the magnetic field is increasing at the rate of 0.020 T/s), determine the induced emf. (Use Faraday's law; the induced emf in a loop equals the absolute value of the time rate of change of the magnetic flux through the loop.) (b) If the total resistance of the circuit is 5.0(82), find the induced current. (c) Suppose we change the...
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