Which of the following units represents magnetic force product?

The correct choice representing magnetic force product is indeed expressed in the unit T²/m. This unit is derived from the relationship between magnetic field strength and force exerted on a charged particle moving within that field.

In the context of magnetism, the magnetic field (measured in Tesla, T) interacts with velocity and charge to produce a magnetic force. For example, when examining a charged particle, the force can be quantified as a result of the magnetic field gradient, represented mathematically in terms of its square (T²) over length (m).

Using T²/m reflects the combined effect of the magnetic field's intensity and its gradient, making it an important parameter in the study of magnetic resonance and its various applications. Therefore, T²/m effectively captures the concept of magnetic force in relation to change in magnetic field strength over distance, distinguishing it from the other choices presented.