Fleming's Right Hand Rule (Electromagnetic Induction)

Fleming's Right-Hand Rule is used to determine the direction of the Induced Electric Current when a physical wire is moved forcefully through a magnetic field. (This is the exact principle of how dams and wind turbines generate electricity).

Stretch the Thumb, Forefinger (Index finger), and Middle finger of your RIGHT HAND so that all three are mutually perpendicular (at exactly 90-degree angles) to each other, like the corners of a box.

Assign the physics properties as follows:

• Thumb: Points in the direction of the physical Motion (or Force) applied to the wire.
• Forefinger (Index): Points in the direction of the Magnetic Field (always from the North pole to the South pole).
• Middle Finger: Once the first two fingers are placed correctly, your middle finger will automatically point in the direction of the newly generated Induced Current.

To easily memorize which finger is which in exam halls, use the classic 'FBI' or 'Father, Mother, Child' trick:

• Thumb = Force (or Motion) / Father
• Forefinger = B (The physics symbol for Magnetic Field) / Mother
• Middle Finger = I (The physics symbol for Current) / Child