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Flashcards on Solenoids
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What is a solenoid?
A long straight coil of wire
How does a solenoid generate a magnetic field?
By passing an electric current through the wire coil
What can be used to strengthen the magnetic field of a solenoid?
An iron core
What is the main application of solenoids?
Electromagnets
What type of path is taken to evaluate Ampere's Law for solenoids?
Rectangular path
What is the contribution inside the coil when applying Ampere's Law?
BL
Which side of the rectangular path has the length parallel to the solenoid field?
The side of length L
What is the direction of the magnetic field inside the solenoid?
Essentially perpendicular to the sides of the path
What is the dominant contribution of the length inside the coil when the end of the path is far from the coil?
The length inside the coil
What happens to the magnetic field when the field is negligible at the far end of the coil?
The field is negligible
What can be added to a solenoid to greatly strengthen the magnetic field?
An iron core
What type of magnetic field can a solenoid generate?
A nearly uniform magnetic field
What are solenoids typically used for?
Various practical applications
What is the field strength inside a solenoid with an iron core compared to a solenoid without one?
Greatly strengthened
What is the dominant contribution of the length inside a solenoid when applying Ampere's Law?
BL
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Test Your Knowledge
What is a solenoid primarily made of?
Plastic
Rubber
Wire coil
Wood
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What is the function of an iron core in a solenoid?
Decrease the magnetic field
Increase the resistance
Strengthen the magnetic field
Create an electric field
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What type of field can a solenoid generate?
Gravitational field
Magnetic field
Heat field
Light field
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What is the direction of the magnetic field inside a solenoid?
Perpendicular to the sides of the path
Parallel to the sides of the path
Antiparallel to the length of the path
Curved along the path
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What is the main application of solenoids?
Generating solar power
Creating electromagnets
Producing sound waves
Generating static electricity
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What is the contribution inside a solenoid when applying Ampere's Law?
BL
FL
EL
CL
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What is the direction of the magnetic field outside a solenoid?
Perpendicular to the sides of the path
Parallel to the sides of the path
Negligible
Antiparallel to the length of the path
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What is the dominant contribution of the length inside a solenoid when the far end of the path has negligible field?
The length outside the solenoid
The length inside the solenoid
The length in the iron core
The length of the coil
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What happens to the magnetic field at the far end of the solenoid when it is negligible?
The field is negligible
The field doubles
The field triples
The field remains constant
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What is the purpose of evaluating Ampere's Law for solenoids?
To measure electric current
To analyze the magnetic field
To calculate resistance
To determine voltage
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