S.I unit of Electric intensity is

Options

A. `Hm^(-1)`
B. `Nm^(-1)`
C. `Vm^(-1)`
D. `NC`

Answer

To find the S.I. unit of electric intensity, also known as electric field intensity, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Electric Intensity**: Electric intensity (or electric field intensity) is a measure of the force experienced by a unit charge in an electric field. It is often denoted by the symbol \( E \).

2. **Recall the Formula**: The relationship between electric intensity and force can be expressed by the formula:
\[ F = Q \cdot E \]
where \( F \) is the force experienced by the charge \( Q \) in the electric field.

3. **Rearranging the Formula**: We can rearrange the formula to express electric intensity:
\[ E = \frac{F}{Q} \]
This shows that electric intensity is equal to the force per unit charge.

4. **Identify Units**:
- The unit of force \( F \) in the S.I. system is the Newton (N).
- The unit of charge \( Q \) in the S.I. system is the Coulomb (C).

5. **Combine Units**: Substituting the units into the formula for electric intensity gives:
\[ E = \frac{\text{Newton}}{\text{Coulomb}} = \text{N/C} \]

6. **Conclusion**: Therefore, the S.I. unit of electric intensity is:
\[ \text{N/C} \quad \text{(Newton per Coulomb)} \]

### Final Answer:
The S.I. unit of electric intensity is **Newton per Coulomb (N/C)**.

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