Which physical quantity has unit `NC^(-1)` ? Is it a vector or scalar quantity?

Explanation

To solve the question, we need to identify which physical quantity has the unit `NC^(-1)` (newton per coulomb) and determine whether it is a vector or scalar quantity.

### Step-by-Step Solution:

1. **Understanding the Units**:
- The unit `NC^(-1)` can be broken down into its components:
- `N` stands for Newton, which is the SI unit of force.
- `C` stands for Coulomb, which is the SI unit of electric charge.

2. **Identifying the Physical Quantity**:
- We know that electric field (E) is defined as the force (F) experienced per unit charge (Q):
\[ E = \frac{F}{Q} \]
- Therefore, the unit of electric field can be expressed as:
\[ E = \frac{N}{C} = NC^{-1} \]
- This means that the physical quantity corresponding to the unit `NC^(-1)` is the electric field.

3. **Determining the Nature of the Quantity**:
- Next, we need to determine whether the electric field is a vector or scalar quantity.
- The force (which is a component of the electric field definition) has both magnitude and direction, making it a vector quantity.
- Since the electric field is derived from the force per unit charge, it also possesses both magnitude and direction.

4. **Conclusion**:
- Therefore, the physical quantity that has the unit `NC^(-1)` is the electric field, and it is a vector quantity.

### Final Answer:
The physical quantity with unit `NC^(-1)` is the electric field, and it is a vector quantity.