Question:
A current carrying coil is subjected to a uniform magnetic field. The coil will orient so that its plane becomes
A current carrying coil is subjected to a uniform magnetic field. The coil will orient so that its plane becomes
Updated On: May 21, 2024
- inclined at 45$^{\circ}$ to the magnetic field
- inclined at any arbitrary angle to the magnetic field
- parallel to the magnetic field
- perpendicular to magnetic field
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The Correct Option is D
Approach Solution - 1
The plane of coil will orient it self so that area vector aligns itself along the magnetic field. So, the plane will orient perpendicular to the magnetic field.
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Approach Solution -2
A coil that is carrying current acts like a magnetic dipole. Consequently, a coil will align itself in a uniform magnetic field so that its dipole moment runs parallel to the magnetic field. Furthermore, the dipole moment of a coil is known to be perpendicular to its plane. As a result, the coil will position itself so that the direction of the magnetic field is perpendicular to its plane.
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Concepts Used:
Moving Charges and Magnetism
Moving charges generate an electric field and the rate of flow of charge is known as current. This is the basic concept in Electrostatics. Another important concept related to moving electric charges is the magnetic effect of current. Magnetism is caused by the current.
Magnetism:
- The relationship between a Moving Charge and Magnetism is that Magnetism is produced by the movement of charges.
- And Magnetism is a property that is displayed by Magnets and produced by moving charges, which results in objects being attracted or pushed away.
Magnetic Field:
Region in space around a magnet where the Magnet has its Magnetic effect is called the Magnetic field of the Magnet. Let us suppose that there is a point charge q (moving with a velocity v and, located at r at a given time t) in presence of both the electric field E (r) and the magnetic field B (r). The force on an electric charge q due to both of them can be written as,
F = q [ E (r) + v × B (r)] ≡ EElectric +Fmagnetic
This force was based on the extensive experiments of Ampere and others. It is called the Lorentz force.