Difference between Flemings left hand rule and right hand rule
Fleming’s left hand rule
1.) Fleming’s left hand rule is used to detect the direction of motion of conductor (force) when placed in uniform magnetic field.
2.) According to this rule, if you stretched thumb, index finger and middle finger such that they are mutually perpendicular to each other then,
1) Index finger is used to indicate direction of magnetic field.
2) Middle finger is used to indicate direction of current.
3) Thumb will point towards direction of force acting on conductor.
3.) Schematic diagram showing the different quantities in the Fleming’s left hand rule is shown below,
4.) Fleming’s left hand rule is very useful in detection of direction of force acting on the arms of armature coil in electric motor.
Fleming’s right hand rule
1.) Fleming’s right hand rule is used to detect the direction of induced current in conductor produced due to electromagnetic induction.
2.) According to Fleming’s right hand rule, if thumb, index finger and middle finger of right hand are stretched such that they are mutually perpendicular to each other then,
1) Thumb indicates direction of force
2) Index finger indicates direction of magnetic field
3) then middle finger will indicate the direction of induced current.
3.) Schematic diagram showing the different quantities in the Fleming’s right hand rule is shown below,
4.) Fleming’s right hand rule is very useful in detection of direction of induced current in electric generator.