Name and state the rule to determine the direction of a : (i) magnetic field produced around a current carrying straight conductor. (ii) force experienced by a current carrying straight conductor placed in a magnetic field which is perpendicular to it.

(i) Right-Hand Thumb Rule: This rule is used to determine the direction of the magnetic field around a straight current-carrying conductor. It states that if you imagine holding the conductor in your right hand with the thumb pointing in the direction of the current, then your fingers will wrap around the conductor in the direction of the magnetic field lines.

(ii) Fleming's Left-Hand Rule: This rule determines the direction of the force experienced by a current-carrying conductor in a magnetic field. It states that if you stretch the thumb, forefinger, and middle finger of your left hand mutually perpendicular to each other, such that the forefinger points in the direction of the Magnetic Field and the middle finger points in the direction of the Current, then the thumb will point in the direction of the Motion or the Force acting on the conductor.