State the rule to determine the direction of a:

(i) magnetic field produced around a straight conductor carrying current.

(ii) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.

(iii) current induced in a straight conductor moving in a magnetic field.

(i) The direction of magnetic field produced around a straight current-carrying conductor is determined by using Maxwell's right hand thumb rule.

(ii) The direction of force experienced by a current-carrying straight conductor placed in a magnetic field is determined by Fleming's left-hand rule.

(iii) The direction of current induced in a straight conductor moving in a magnetic field is determined by Fleming's right-hand rule.