The direction of force (motion) of a current carrying conductor in a magnetic field is given by

Options

A. Fleming's left hand rule
B. Right hand thumb rule
C. Fleming's right hand rule
D. None of these.

Answer

To determine the direction of force (motion) of a current-carrying conductor in a magnetic field, we can use Fleming's Left-Hand Rule. Here’s a step-by-step solution:

### Step 1: Understand the Components
- A current-carrying conductor placed in a magnetic field experiences a magnetic force.
- The three main components to consider are:
1. The direction of the current (I)
2. The direction of the magnetic field (B)
3. The direction of the force (F) acting on the conductor

### Step 2: Apply Fleming’s Left-Hand Rule
- Fleming's Left-Hand Rule states that if you align your left hand in a specific way, you can determine the direction of the force.
- To apply this rule:
- Extend your thumb, index finger, and middle finger such that they are mutually perpendicular (at right angles) to each other.

### Step 3: Assign Directions to Fingers
- Assign the directions as follows:
- **Index Finger**: Point in the direction of the magnetic field (B).
- **Middle Finger**: Point in the direction of the current (I).
- **Thumb**: The direction in which your thumb points will indicate the direction of the force (F) acting on the conductor.

### Step 4: Visualize the Setup
- For example, if the magnetic field is directed from north to south and the current is flowing upwards:
- Point your index finger north (direction of the magnetic field).
- Point your middle finger upwards (direction of the current).
- Your thumb will then point outwards, indicating the direction of the force.

### Step 5: Conclusion
- The direction of the force on the current-carrying conductor in the magnetic field can be determined using Fleming's Left-Hand Rule. This rule helps visualize the relationship between the current, magnetic field, and force.