In the Left-Hand Rule for Generators, which finger indicates the current into the armature?

In the Left-Hand Rule for Generators, which finger indicates the current into the armature?

• A. Index finger
• B. Thumb
• C. Center (middle) finger
• D. Little finger

Answer: (C)

Fleming's left-hand rule for generators relates three perpendicular directions: motion, magnetic field, and current. The thumb shows the motion (the direction the conductor moves), the forefinger shows the magnetic field direction (from north to south), and the middle finger points in the direction of the induced current in the conductor. In this setup, that current flow is into the armature, so the middle finger is the one that indicates current into the armature.

Fleming's left-hand rule for generators relates three perpendicular directions: motion, magnetic field, and current. The thumb shows the motion (the direction the conductor moves), the forefinger shows the magnetic field direction (from north to south), and the middle finger points in the direction of the induced current in the conductor. In this setup, that current flow is into the armature, so the middle finger is the one that indicates current into the armature.