Question

State Fleming’s Left-Hand Rule and Right-Hand Thumb Rule.

Hint:

{Fleming’s Left-Hand Rule → Direction of force on conductor}
{Right-Hand Thumb Rule → Direction of magnetic field around current}

Answer 1

Concept: In electromagnetism, certain rules are used to determine the direction of magnetic field, current, and force acting on a conductor placed in a magnetic field. Two important rules are Fleming’s Left-Hand Rule and the Right-Hand Thumb Rule.
Step 1:Fleming’s Left-Hand Rule} Fleming’s Left-Hand Rule helps to determine the direction of the force (motion) acting on a current-carrying conductor placed in a magnetic field. According to this rule, if the thumb, forefinger, and middle finger of the left hand are stretched so that they are mutually perpendicular to each other:

• The forefinger represents the direction of the magnetic field.
• The middle finger represents the direction of the current.
• The thumb represents the direction of the force or motion of the conductor.

Step 2:Right-Hand Thumb Rule} The Right-Hand Thumb Rule is used to determine the direction of the magnetic field around a straight current-carrying conductor. According to this rule, if we hold a straight conductor in the right hand such that the thumb points in the direction of current, then the curled fingers represent the direction of the magnetic field around the conductor.