magnetic effect of current class 12|physics|NEB|Magnetism|

Here,in this post you will gets the notes of"Magnetic effect of current for class 12" which is important chapter for NEB board exam.

The magnetic effect of current refers to the phenomenon where an electric current produces a magnetic field around it. This magnetic field is perpendicular to the direction of the current flow and is circular in shape around the conductor.

The magnetic field produced by a current-carrying conductor can be visualized using the right-hand rule. If the thumb of the right hand is pointed in the direction of the current flow, then the fingers wrapped around the conductor will indicate the direction of the magnetic field.

The strength of the magnetic field produced by a current-carrying conductor depends on several factors, including the magnitude of the current, the distance from the conductor, and the shape of the conductor. The magnetic field produced by a straight conductor is stronger near the conductor and weaker further away, while the magnetic field produced by a loop or coil of wire is stronger near the center and weaker further away.

The magnetic effect of current has many practical applications in everyday life. One important application is in the construction of electric motors and generators. These devices use the interaction between a magnetic field and an electric current to generate motion or electrical power.

Another important application of the magnetic effect of current is in magnetic resonance imaging (MRI), which is a medical imaging technique used to visualize internal structures of the body. In MRI, strong magnetic fields are used to align the hydrogen atoms in the body, and then radio waves are used to excite these atoms and create a signal that can be used to create detailed images.

In summary, the magnetic effect of current is the phenomenon where an electric current produces a magnetic field around a conductor. This magnetic field has important practical applications in electric motors, generators, and medical imaging. Understanding the principles of the magnetic effect of current is essential in designing and developing new technologies that use magnetism for various applications.

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