To start with, let’s familiarize oneself with obtained expressions because that lifting strength of one electromagnet: magnetic field, magnetic field strength.
You are watching: How can the strength of an electromagnet be increased
According to wikipedia, a magnetic field is a vector ar that explains the magnetic affect on moving electric charges, electrical currents, and also magnetic materials. In electromagnetics, magnetic areas surround magnetized materials, and also are produced by electrical currents such together those used in electromagnets, and by electrical fields varying in time.
Lifting power of Electromagnet (Magnetic ar Strength) Formula
Electric current(I) is the rate of flow of charge(Q) per unit time (t). I.e I=Q/t and also Q=It from this equation, if you rise current, the quantity of charge likewise increases. In lorentz invariant equation that magnetic force:F= qE+ qvB whereF is magnetic forceq is the amount of chargeV is the velocity that the charged particles which space in our case electrons flowing in the conductors offered to do the electromagnet, and B is the magnetic flux density.
This has actually the same meaning with questions like “how to do an electromagnet an ext powerful?”, “how can you boost the toughness of one electromagnet?”, or “how to do an electromagnet stronger?”
From the above noted equations, we can plainly see exactly how magnetic ar strength depends on Current(I) and also charge(Q). Together the strength of the field from one electromagnet is controlled by and proportional to the current flowing v the coil and also the variety of turns – “ampere-turns” the the coil.
Therefore, there are several ways to boost electromagnetic strength:
Increasing the quantity of current flowing through the wire – The magnetic field is led to by the existing flowing in the wire. The enlarge the existing the stronger the magnetic field and hence the stronger the electromagnet.However, it must be kept in mind the there is a limit to the strength of magnetic ar the steel core will certainly support. The present can it is in increased however the magnetic toughness will not boost in proportion. The core saturates and an increase in current will not reason a matching increase in the magnetic field.
Adding a ferromagnetic core – this likewise increases the magnetic ar (up to a point) and also helps to straight the field to whereby it’s needed. Making use of a large, continuous ferromagnetic core, merged with properly-shaped pole pieces, deserve to concentrate the magnetic field and make it also stronger in between pole pieces.However, at high fields, ferromagnetic materials saturate, and provide no further benefit. The strongest electromagnets actually usage no main point – they space air-core coils. These commonly operate with higher current and are normally water-cooled to eliminate heat. Even more powerful electromagnets use superconducting cable to stop resistive losses.
Increasing the variety of turns top top core – because the magnetic field induced by the electromagnet counts on number of turns of the coil every unit size it deserve to be made more powerful through having much more turns of wire in a provided length of electro magnet.
See more: Why Does Frankenstein Feel He Has The Right To Take The Life Of His Monster
Using material of high electrical conductivity as coil (like copper, silver etc)
To sum up, the magnetic field strength of an electromagnet is proportional to both the number of turns in the winding, and also the existing in the wire. Increase in the magnetic strength method increasing the lifting power of one electromagnet.