An electron is moving in the north direction. It experiences a force in vertically upward direction. The magnetic field at the position of the electron is in the direction of

Options

A. East
B. West
C. North
D. South

Explanation

To determine the direction of the magnetic field at the position of an electron moving in the north direction and experiencing an upward force, we can use the right-hand rule for the magnetic force on a charged particle.

### Step-by-Step Solution:

1. **Identify the Direction of Motion**:
The electron is moving in the north direction.

2. **Identify the Direction of the Force**:
The force experienced by the electron is in the vertically upward direction.

3. **Use the Right-Hand Rule**:
For a positive charge, the right-hand rule states that if you point your thumb in the direction of the velocity (north in this case) and your fingers in the direction of the magnetic field, your palm will face in the direction of the force. However, since the electron is negatively charged, the force direction will be opposite to what we find using the right-hand rule.

4. **Applying the Right-Hand Rule**:
- Point your thumb north (the direction of the electron's motion).
- Your palm should face upward (the direction of the force).
- Now, to find the direction of the magnetic field, you need to rotate your fingers to point in the direction of the magnetic field.

5. **Determine the Direction of the Magnetic Field**:
If your thumb is pointing north and your palm is facing upward, your fingers will point towards the east. Therefore, the magnetic field at the position of the electron is directed towards the east.

### Conclusion:
The magnetic field at the position of the electron is directed towards the **east**.