<P> The bolded letters in the directions above give a mnemonic way to remember the order . Another mnemonic for remembering the rule is the initialism "FBI", standing for Force (or otherwise motion), B the symbol for the magnetic field, and I the symbol for current . The subsequent letters correspond to subsequent fingers, counting from the top . Thumb -> F; First finger -> B; Second finger -> I </P> <P> There is also a Fleming's left hand rule (for electric motors). The appropriately handed rule can be recalled from the letter "g", which is in "right" and "generator". </P> <P> These mnemonics are named after British engineer John Ambrose Fleming, who invented them . </P>

The right hand rule for determining the direction of the induced emf was introduced by