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: Rule Identification
The rule for determining the direction of force on a current-carrying conductor in a magnetic field is known as Fleming's Left-Hand Rule.

Step 2: Rule Description
Fleming's Left-Hand Rule posits that when the thumb, index finger, and middle finger of the left hand are extended mutually perpendicular to each other:
- The index finger indicates the magnetic field direction (\( B \), North to South).
- The middle finger indicates the current direction (\( I \), positive to negative).
- The thumb indicates the force (\( F \)) or motion direction of the conductor.

Step 3: Practical Use
This rule facilitates the determination of the force direction on a conductor carrying current within a magnetic field. The force is always perpendicular to both the magnetic field and the current.

Summary:
Fleming's Left-Hand Rule is employed to ascertain the force direction on a conductor within a magnetic field, establishing that the force, magnetic field, and current directions are mutually perpendicular.