The unit of magnetic flux is

Options

A. `Wbm^(-2)`
B. Wb
C. H
D. `Am^(-1)`

Explanation

To determine the unit of magnetic flux, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Magnetic Flux**:
Magnetic flux (Φ) is defined as the product of the magnetic field (B) and the area (A) through which the field lines pass. Mathematically, it is expressed as:
\[ \Phi = \mathbf{B} \cdot \mathbf{A} \]
where "·" denotes the dot product.

2. **Identify the Units of Magnetic Field and Area**:
- The unit of magnetic field (B) is the Tesla (T).
- The unit of area (A) is square meters (m²).

3. **Combine the Units**:
Since magnetic flux is the product of the magnetic field and the area, we can combine their units:
\[ \text{Unit of Magnetic Flux} = \text{Unit of B} \times \text{Unit of A} = \text{Tesla} \times \text{meter}^2 \]
This can be written as:
\[ \text{Unit of Magnetic Flux} = T \cdot m^2 \]

4. **Convert to Standard Unit**:
The unit Tesla meter squared (T·m²) is also known as the Weber (Wb). Therefore, we can conclude:
\[ \text{Unit of Magnetic Flux} = \text{Weber} \, (Wb) \]

5. **Final Answer**:
The unit of magnetic flux is Weber (Wb).