Question

What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from fleming's left-hand rule

Answer 1

The thumb indicates the direction of current in the straight conductor held by curled fingers, whereas the Fleming’s left-hand rule gives the direction of force experienced by current carrying conductor placed in an external magnetic field.

Answer 2

The ​direction of thumb in the right hand thumb rule indicates the direction of current.

In fleming's right hand rule the direction of thumb indicated the motion of conductor.