A negative test charge is moving mear a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is:

Options

A. parallel to the wire opposite to the current
B. parallel to the wire along the current
C. away from the wire
D. towards the wire

Explanation

To solve the problem, we need to analyze the situation involving a negative test charge moving near a long straight wire that carries a current. The key points to consider are the direction of the current, the magnetic field produced by the current, and the force acting on the test charge.

### Step-by-Step Solution:

1. **Identify the Direction of Current**:
- Assume the current in the wire is flowing in a certain direction (let's say from left to right).

2. **Determine the Magnetic Field Direction**:
- According to the right-hand rule, if you point your thumb in the direction of the current (right), your fingers will curl around the wire in the direction of the magnetic field. Therefore, the magnetic field will circulate around the wire.

3. **Analyze the Force on the Negative Test Charge**:
- The force acting on a charge in a magnetic field is given by the equation:
\[ \mathbf{F} = q \mathbf{v} \times \mathbf{B} \]
where \( q \) is the charge, \( \mathbf{v} \) is the velocity of the charge, and \( \mathbf{B} \) is the magnetic field.

4. **Direction of the Force**:
- Since the test charge is negative, the force will be in the opposite direction to what is predicted by the right-hand rule. If the force is parallel to the direction of the current, we need to determine how this affects the motion of the charge.

5. **Evaluate the Motion of the Charge**:
- If the force is parallel to the direction of the current, and since the charge is negative, the motion of the charge will be in the opposite direction to the current. This means the negative charge is moving towards the wire.

6. **Conclusion**:
- Therefore, the motion of the negative test charge is towards the wire, opposite to the direction of the current.

### Final Answer:
The motion of the negative test charge is **towards the wire**.