What is the major difference between Fleming’s right hand rule and left hand rule?
the right hand rule is for positive charge then is the left hand rule applicable for negative charge??
the right hand rule is for positive charge then is the left hand rule applicable for negative charge??
Left Hand Rule
Right Hand Rule
Invented by
John Ambrose Fleming
John Ambrose Fleming
Used for
Electric Motors
Generator
Purpose
The direction of motion in an electric motor
The direction of induced current when a conductor moves in a magnetic field.
Thumb
The Thumb represents the direction of the Thrust on the conductor / Motion of the Conductor.
The Thumb represents the direction of Motion of the conductor.
First / Fore Finger
The Fore finger represents the direction of the magnetic Field
The First finger represents the direction of the Field. (north to south)
Second / Middle / Center Finger
The Centre finger represents the direction of the Current
The Second finger represents the direction of the induced or generated Current (the direction of the induced current will be the direction of conventional current; from positive to negative).
Basically, Flemings left hand rule is used to find the direction of force on the conductor.Here we take current direction from positive side to negative side(conventional current) and then we apply flemings left hand rule.
In general, we use the same following convention. According to your question, if you consider about electron movement, the current direction would be reversed which ultimately changes the direction of force on the conductor. It indirectly means that you are changing the platform from positive charge movement to negative charge movement ,so you have to think completely in this platform(electrons movement alone for entire problem) in order to get correct solutions.
| Left Hand Rule | Right Hand Rule | |
| Invented by | John Ambrose Fleming | John Ambrose Fleming |
| Used for | Electric Motors | Generator |
| Purpose | The direction of motion in an electric motor | The direction of induced current when a conductor moves in a magnetic field. |
| Thumb | The Thumb represents the direction of the Thrust on the conductor / Motion of the Conductor. | The Thumb represents the direction of Motion of the conductor. |
| First / Fore Finger | The Fore finger represents the direction of the magnetic Field | The First finger represents the direction of the Field. (north to south) |
| Second / Middle / Center Finger | The Centre finger represents the direction of the Current | The Second finger represents the direction of the induced or generated Current (the direction of the induced current will be the direction of conventional current; from positive to negative). |
Basically, Flemings left hand rule is used to find the direction of force on the conductor.Here we take current direction from positive side to negative side(conventional current) and then we apply flemings left hand rule.
In general, we use the same following convention. According to your question, if you consider about electron movement, the current direction would be reversed which ultimately changes the direction of force on the conductor. It indirectly means that you are changing the platform from positive charge movement to negative charge movement ,so you have to think completely in this platform(electrons movement alone for entire problem) in order to get correct solutions.
