Welcome to the Quiz!
This quiz contains 17 questions from a mix of 1 subtopics.
According to Fleming's left-hand rule, which finger represents the direction of the force on a current-carrying wire in a magnetic field?
thumb
first finger
second finger
third finger
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What is the relationship between the force on a current-carrying wire and the magnetic flux density?
the force is independent of the magnetic flux density
the force is inversely proportional to the magnetic flux density
the force is proportional to the magnetic flux density
the force is proportional to the square of the magnetic flux density
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Which of the following factors does the force on a current-carrying wire in a magnetic field depend on?
length of the conductor
all of the above
current
magnetic flux density
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A wire carrying a current of 10 A is placed in a uniform magnetic field of 0.5 T. If the wire is perpendicular to the magnetic field and has a length of 4 meters, what is the force exerted on the wire?
20 N
10 N
40 N
2 N
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At which angle between the current-carrying wire and the magnetic field is the force on the wire maximum?
45°
180°
0°
90°
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What is the formula for the force on a current-carrying wire at an angle θ to a magnetic field?
F = B I l cosθ
F = B I l tanθ
F = B I l cotθ
F = B I l sinθ
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A wire carrying a current of 8 A is placed in a uniform magnetic field of 0.4 T. If the wire is at an angle of 30° to the magnetic field and has a length of 5 meters, what is the force exerted on the wire?
32 N
8 N
16 N
4 N
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What happens to the force on a current-carrying wire in a magnetic field if the current is doubled?
the force becomes zero
the force halves
the force doubles
the force remains the same
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Which of the following is not a factor that affects the force on a current-carrying wire in a magnetic field?
resistance of the wire
length of the conductor
current
magnetic flux density
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A wire carrying a current of 6 A is placed in a uniform magnetic field of 0.3 T. If the wire is at an angle of 60° to the magnetic field and has a length of 3 meters, what is the force exerted on the wire?
5.2 N
3.1 N
2.6 N
4.7 N
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Explain how Fleming's left-hand rule is used to determine the direction of the force on a current-carrying wire in a magnetic field.
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Describe the relationship between the force on a current-carrying wire and the magnetic flux density, current, and length of the conductor.
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A current-carrying wire is oriented at a 45° angle to a uniform magnetic field. The wire carries a current of 3 A, is 1.5 m long, and the magnetic flux density is 0.4 T. Calculate the force exerted on the wire.
1.59 N
0.9 N
1.27 N
2.12 N
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What is the force exerted on a 2m long wire carrying a 4A current, placed perpendicularly in a magnetic field with a flux density of 0.25 T?
3 N
4 N
2 N
1 N
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Calculate the force on a wire carrying a 2A current, 3m in length, when placed in a magnetic field of flux density 0.5 T at an angle of 30°.
1.5 N
2.25 N
0.75 N
1.73 N
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A wire of length 1 m carrying a 5A current is placed within a 0.3T magnetic field at a 60° angle to the field lines. Find the force exerted on the wire.
2.25 N
0.75 N
1.5 N
1.3 N
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Determine the force on a 0.5m wire carrying a current of 3A, oriented at a 90° angle to a magnetic field with a flux density of 0.2 T.
1 N
0.3 N
0.6 N
0.15 N
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