Question

What is the SI unit of magnetic induction?

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

Hint:

Magnetic field strength \(B\) is measured in Tesla (T) in SI units. Remember: \(1\,T = 1\,\text{Weber}/m^2\).

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks for the standard International System (SI) unit for magnetic induction, which is also known as magnetic flux density (\(B\)).
Step 2: Key Formula or Approach:
Magnetic induction is defined as the magnetic flux passing per unit area through a surface at right angles to the direction of the flux.
\[ B = \frac{\Phi}{A} \] where \(\Phi\) is magnetic flux and \(A\) is area.
Step 3: Detailed Explanation:
1. Weber (Wb): This is the SI unit of magnetic flux (\(\Phi\)).

2. Tesla (T): This is the SI unit of magnetic induction (\(B\)). One Tesla is equal to one Weber per square meter (\(1\ T = 1\ Wb/m^2\)).

3. Henry (H): This is the SI unit of inductance (L).

4. Gauss (G): This is the CGS unit of magnetic induction, where \(1\ T = 10^4\ G\).
Step 4: Final Answer:
The SI unit for magnetic induction is the Tesla.