Fleming's Left-Hand Rule

Also called

force on a current-carrying conductor · motor effect · horseshoe magnet · aluminium rod experiment · direction of force · magnetic field · electric current · loudspeaker · voice coil · electric motor principle · reversing the current · reversing the field · फ्लेमिंग का वाम-हस्त नियम · चुंबकीय क्षेत्र · विद्युत धारा · बल की दिशा

Topics

• A current-carrying conductor placed in a magnetic field experiences a force.
• The force is largest when the current is at right angles to the field, and zero when they are parallel.
• Reversing the direction of the current reverses the direction of the force.
• Reversing the direction of the magnetic field also reverses the direction of the force.
• Fleming's left-hand rule: stretch the thumb, first finger and second finger of the left hand at right angles.
• First finger points along the Field, seCond finger along the Current, and the thuMb gives the Motion (force).
• Electric motors, loudspeakers and measuring instruments all use this force on a current in a magnetic field.
• In a loudspeaker the force on the voice coil moves the cone to and fro, making sound waves in the air.

About this model

A GLB file of about 226 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

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