Flemings left hand rule and Flemings right hand rule
In 1885 John Ambrose Fleming was appointed head of electrical technology at University College London, where he devised his right hand and left hand rule for the relationship of motion of a wire in an electrical field.
The difference between Flemings left hand rule and right hand rule is that:
LEFT = ELECTRICITY
Flemings left hand rule is used when electricity or electrical current is already being passed down a wire.
Flemings right hand rule is used when you want to induce an electrical current in a wire.