How Do You Calculate the Attractive Force of an Electromagnet?

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To calculate the attractive force of an electromagnet, one must consider the current flowing through the coil, the number of turns in the coil, and the magnetic properties of the core material. The relationship between these parameters and the force can be expressed through formulas derived from electromagnetic theory. For instance, the force can be estimated using the equation F = (B^2 * A) / (2 * μ0), where B is the magnetic flux density, A is the cross-sectional area, and μ0 is the permeability of free space. Additionally, practical experiments can help refine calculations based on specific setups. Understanding these principles is crucial for designing an electromagnet capable of lifting specific weights, such as 1 kg.
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How can I calculate a electric-magnet? I mean, I want to built a electric-magnet to raise for example 1kg. I know that the atractive force depends on the current and the number of wires in the coil, as well the quality of the steel in the middle of the coil. But I don't know how can I associate this parameters to an attractive force like 10 Newonts.
Can anybody help?
 
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