Describe shape of a magnetic field produced by an electric current flowing through a wire
KEY TAKEAWAYS
Key Points
A wire carrying electric current will produce a magnetic field with closed field lines surrounding the wire.
Another version of the right hand rules can be used to determine the magnetic field direction from a current—point the thumb in the direction of the current, and the fingers curl in the direction of the magnetic field loops created by it. See.
The Biot-Savart Law can be used to determine the magnetic field strength from a current segment. For the simple case of an infinite straight current-carrying wire it is reduced to the form B=μ0I2πrB=μ0I2πr.
A more fundamental law than the Biot-Savart law is Ampere ‘s Law, which relates magnetic field and current in a general way. It is written in integral form as ∮B⋅dl=μ0Ienc∮B⋅dl=μ0Ienc, where Ienc is the enclosed current and μ0 is a constant.
A current-carrying wire feels a force in the presence of an external magnetic field. It is found to be F=BilsinθF=Bilsinθ, where ℓ is the length of the wire, i is the current, and θ is the angle between the current direction and the magnetic field.
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diduduvyvybybyb
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Stefanierrobles
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Answer:
LEARNING OBJECTIVES
Describe shape of a magnetic field produced by an electric current flowing through a wire
KEY TAKEAWAYS
Key Points
A wire carrying electric current will produce a magnetic field with closed field lines surrounding the wire.
Another version of the right hand rules can be used to determine the magnetic field direction from a current—point the thumb in the direction of the current, and the fingers curl in the direction of the magnetic field loops created by it. See.
The Biot-Savart Law can be used to determine the magnetic field strength from a current segment. For the simple case of an infinite straight current-carrying wire it is reduced to the form B=μ0I2πrB=μ0I2πr.
A more fundamental law than the Biot-Savart law is Ampere ‘s Law, which relates magnetic field and current in a general way. It is written in integral form as ∮B⋅dl=μ0Ienc∮B⋅dl=μ0Ienc, where Ienc is the enclosed current and μ0 is a constant.
A current-carrying wire feels a force in the presence of an external magnetic field. It is found to be F=BilsinθF=Bilsinθ, where ℓ is the length of the wire, i is the current, and θ is the angle between the current direction and the magnetic field.