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pythagoras88
- 17
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Does a straight wire in changing B field(the field is perpendicular to the wire) has an induced emf?
The "wire in changing B field" phenomenon refers to the behavior of an electrically charged wire when it is placed in a magnetic field that is changing over time. This can result in the wire experiencing a force and possibly even inducing an electric current in the wire.
When a wire is placed in a changing magnetic field, it will experience a force due to the interaction between the magnetic field and the electric charges in the wire. This force is known as the Lorentz force and can cause the wire to move or even induce an electric current in the wire.
A wire experiences a force in a changing magnetic field because of the interaction between the magnetic field and the electric charges in the wire. Moving electric charges create a magnetic field, and when this magnetic field interacts with the external magnetic field, it results in a force on the wire.
The direction of the wire does not affect its behavior in a changing magnetic field. The force on the wire will always be perpendicular to both the direction of the magnetic field and the current in the wire, regardless of the orientation of the wire.
The "wire in changing B field" phenomenon has many practical applications, including electric generators and motors that use the interaction between a wire and a changing magnetic field to produce electricity or mechanical motion. It is also used in devices such as transformers and in medical imaging techniques like MRI. Understanding this phenomenon is crucial for many technological advancements in fields such as energy, transportation, and healthcare.