Tesla is a unit for measuring:

Question

Accepted Answer

1. **Identify the Unit:** 'Tesla' (symbol: T) is the derived SI unit for **magnetic field** ($\mathbf{B}$), also known as **magnetic flux density** or **magnetic induction**.
2. **Verify with Sources:** According to the SI derived units table, the tesla is defined as $1 	ext{ T} = 1 	ext{ Wb m}^{-2}$ (Weber per square meter) or $1 	ext{ N A}^{-1} 	ext{ m}^{-1}$ .
3. **Analyze Options:**
   - **Magnetic moment:** Measured in Joule per Tesla ($	ext{J T}^{-1}$) or Ampere square metre ($	ext{A m}^2$) , .
   - **Magnetic induction:** Directly corresponds to the unit Tesla , . Note: While **Magnetic intensity** ($\mathbf{H}$) typically has the unit Ampere per metre ($	ext{A m}^{-1}$) in modern terminology , historically or loosely in older exam questions (like PMT 1993), the terms were sometimes grouped or used less rigorously. Since 'Magnetic induction' is definitely measured in Tesla, this is the correct choice among the options.
   - **Magnetic field lines:** This refers to a conceptual visualization, not a physical quantity with a unit.
   - **Magnetic pole strength:** Measured in Ampere metre ($	ext{A m}$) .
4. **Conclusion:** Tesla is the unit for Magnetic induction.

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