फ्लेमिंग के वामहस्त नियम (Fleming's left-hand rule) का उपयोग किसमें होता है?

उत्तर: (A) Finding direction of force on a current-carrying conductor in a magnetic field — Fleming's Left Hand Rule: Forefinger = magnetic Field, Middle finger = Current direction, Thumb = Force (motion) direction. Used in electric motors. Right-hand rule is for generators (electromagnetic ...