# Let's assume that there is an electromagnet with B=1T , what is the magnitude of the force it could generate on other dipoles equal to it's surface area? Can the magnitude of force (in newtons) be determined from B?

Let's assume that there is an electromagnet with $B=1T$, what is the magnitude of the force it could generate on other dipoles equal to it's surface area? Can the magnitude of force (in newtons) be determined from $B$?
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Miya Swanson
The shape of the field is important for attracting force. Dipole field force varies as the inverse cube of the distance. Beyond that, a sharp edge or a point will have huge field divergence. Magnetically permeable bodies will be sucked in, riding the divergence. Note the pole pattern in refrigerator magnets and channel magnets. For a given total field, one can be clever with addition and subtraction re Halbach arrays.