Question

What is the SI unit of Magnetic Induction?

• A. Weber
• B. Tesla
• C. Henry
• D. Coulomb

Hint:

Magnetic field units to remember: Magnetic flux \( \Phi \) → Weber (W) Magnetic induction \( B \) → Tesla (T) \[ 1\,T = 1\,\frac{Wb}{m^2} \]

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
Magnetic Induction (\(B\)), also known as magnetic flux density, represents the strength of the magnetic field. We need to identify its standard SI unit from the given choices.
Step 2: Key Formula or Approach:
The relationship between magnetic flux (\(\Phi\)) and magnetic induction (\(B\)) is given by:
\[ \Phi = B \cdot A \]
Where \(A\) is the area. Therefore, \(B = \frac{\Phi}{A}\).
Step 3: Detailed Explanation:
1. The SI unit of magnetic flux (\(\Phi\)) is the Weber (Wb).
2. The SI unit of Area (\(A\)) is the square meter (\(m^2\)).
3. Substituting these into the formula, the unit of \(B\) is Weber per square meter (\(Wb/m^2\)).
4. In the SI system, \(1 \, Wb/m^2\) is specifically named the Tesla (T).
5. Other options like Henry (Inductance) and Coulomb (Charge) are units for different physical quantities.
Step 4: Final Answer:
The SI unit of Magnetic Induction is Tesla (B).