Magnetic units: The tesla (T) is the SI unit of magnetic flux density B, not magnetic flux Φ. True or false?

Introduction / Context:
Clear differentiation between flux Φ and flux density B is crucial in electromagnetics. Confusing their SI units can lead to incorrect calculations in transformer core sizing, motor design, and sensor selection.

Given Data / Assumptions:

• Magnetic flux Φ measures total magnetic field passing through an area.
• Magnetic flux density B measures flux per unit area.
• SI units: weber (Wb) for Φ and tesla (T) for B.

Concept / Approach:

By definition, B = Φ / A. Therefore, tesla equals weber per square meter: 1 T = 1 Wb / m^2. Saying “tesla is the unit of magnetic flux” is incorrect; magnetic flux uses the weber. The statement in the prompt reverses these definitions.

Step-by-Step Solution:

Verification / Alternative check:

Consult standard SI unit tables: Weber for flux, Tesla for flux density. Engineering texts on magnetics consistently use Wb for total flux and T for B-field magnitude.

Why Other Options Are Wrong:

• Choosing “True” propagates a common mistake and would mislabel quantities in equations like B = Φ / A.

Common Pitfalls:

Conflating B (tesla) with H (A/m) and μ (H/m), or treating “lines of flux” visualizations as units. Keep track of dimensions to avoid errors in core area or saturation calculations.

Final Answer:

False