Question

Name and state the rule for determining the direction of force on a current carrying conductor placed in a magnetic field.

Answer 1

Step 1: Name of the rule
The rule for determining the direction of force on a current-carrying conductor placed in a magnetic field is called the Fleming's Left-Hand Rule.

Step 2: Fleming's Left-Hand Rule
Fleming's Left-Hand Rule states that if you stretch the thumb, the index finger, and the middle finger of your left hand at right angles to each other, then:
- The index finger represents the direction of the magnetic field (\( B \)) (from north to south).
- The middle finger represents the direction of the current (\( I \)) (from positive to negative).
- The thumb represents the direction of the force (\( F \)) or motion of the conductor.

Step 3: Application
This rule helps in determining the direction of the force acting on a current-carrying conductor placed in a magnetic field. The force is perpendicular to both the magnetic field and the direction of the current.

Conclusion:
Fleming's Left-Hand Rule is used to find the direction of force on a conductor in a magnetic field, ensuring the three directions (force, magnetic field, and current) are mutually perpendicular to each other.