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

Options

A. Electric field, vector
B. Electric potential
C. kinetic energy
D. Potential Energy

Explanation

To solve the question, we need to identify the physical quantity that has the unit of Newton per coulomb (NC^(-1)) and determine if it is a vector or scalar quantity.

### Step-by-Step Solution:

1. **Understanding the Units**:
- The unit given is Newton per coulomb (N/C).
- Newton (N) is the unit of force, and coulomb (C) is the unit of electric charge.

2. **Relating to Electric Field**:
- The electric field (E) is defined as the force (F) experienced by a unit charge (Q). The formula for electric field is given by:
\[ E = \frac{F}{Q} \]
- Here, the unit of force (F) is Newton (N), and the unit of charge (Q) is coulomb (C).

3. **Deriving the Unit of Electric Field**:
- Substituting the units into the formula for electric field:
\[ E = \frac{N}{C} \]
- This shows that the unit of electric field is indeed Newton per coulomb (N/C).

4. **Determining the Nature of Electric Field**:
- Electric field is a vector quantity. This is because it has both magnitude (how strong the field is) and direction (the direction in which a positive charge would move).

5. **Conclusion**:
- The physical quantity that has the unit of Newton per coulomb (N/C) is the electric field.
- The electric field is a vector quantity.

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