Question:
What is the SI unit of magnetic induction?
What is the SI unit of magnetic induction?
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Magnetic flux density \(B\) is measured in Tesla. It can also be expressed as \(\textbf{Weber per square meter (Wb/m}^2\textbf{)}\).
Updated On: Apr 23, 2026
- Weber (Wb)
- Tesla (T)
- Henry (H)
- Coulomb (C)
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The Correct Option is B
Solution and Explanation
Concept:
Magnetic induction, also known as magnetic flux density, is a measure of the strength and direction of a magnetic field at a given point in space. It is usually represented by the symbol \(B\).
Magnetic induction describes how strongly a magnetic field acts on moving electric charges, current-carrying conductors, or magnetic materials. It plays a fundamental role in electromagnetism and appears in many important laws such as the Lorentz force law and Faraday’s law of electromagnetic induction.
The SI unit of magnetic induction is the Tesla (T). One tesla is defined as the magnetic flux density that produces a force of one newton on a one-meter conductor carrying a current of one ampere placed perpendicular to the magnetic field.
Magnetic induction is also related to magnetic flux by the relation:
\[
B = \frac{\Phi}{A}
\]
where
\(\Phi\) = magnetic flux (measured in Weber)
\(A\) = area perpendicular to the magnetic field
Thus, another equivalent unit form is:
\[
1 \, T = 1 \, \frac{\text{Weber}}{m^2}
\]
Step 1: Understanding magnetic induction.
Magnetic induction \(B\) represents the intensity of the magnetic field acting over a unit area.
Step 2: Identifying the SI unit.
The SI unit used to measure magnetic flux density is Tesla (T).
Step 3: Using the unit relationship.
From the relation \(B = \Phi/A\), \[ 1\,T = 1\, \frac{Wb}{m^2} \] Hence, the SI unit of magnetic induction is Tesla (T).
Step 1: Understanding magnetic induction.
Magnetic induction \(B\) represents the intensity of the magnetic field acting over a unit area.
Step 2: Identifying the SI unit.
The SI unit used to measure magnetic flux density is Tesla (T).
Step 3: Using the unit relationship.
From the relation \(B = \Phi/A\), \[ 1\,T = 1\, \frac{Wb}{m^2} \] Hence, the SI unit of magnetic induction is Tesla (T).
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