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Force on a Current Carrying Conductor in a Magnetic Field

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FLEMINGS LEFT HAND RULE:-

Stretch the thumb, forefinger and middle finger of your left hand such that they are mutually perpendicular. If the first finger points in the direction of magnetic field and the second finger in the direction of current, then the thumb will point in the direction of motion or the force acting on the conductor.

Devices that use current-carrying conductors and magnetic fields include electric motor, electric generator, loudspeakers, microphones and measuring instruments.

notes

FORCE ON A CURRENT-CARRYING CONDUCTOR IN A MAGNETIC FIELD:-

A current carrying conductor exerts a force when a magnet is placed in its vicinity. Similarly, a magnet also exerts equal and opposite force on the current carrying conductor. This was suggested by Marie Ampere, a French Physicist and considered as founder of science of electromagnetism.

The direction of force over the conductor gets reversed with the change in direction of flow of electric current. It is observed that the magnitude of force is highest when the direction of current is at right angles to the magnetic field.

description

  • Force on a current carrying conductor in a magnetic field
  • Magnitude of force
  • Unit of magnetic field
  • Fleming's left hand rule for the direction of Force
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Shaalaa.com | Magnetic Effects of Current part 5 (Straight conductor)

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