You are watching: Two ways to increase the strength of an electromagnet
As current runs v a right wire, a one magnetic ar is generated approximately it. Once a wire is made right into a circle, the existing generates a magnetic ar parallel to its axis. If you heap loops on height of each other, together in a coil or solenoid, you increase the magnetic ar strength.
The formula because that the magnetic ar inside a coil is the current multiplied by the loop-count density multiplied by a constant.
By the magnetic field equation within a solenoid, boosting the variety of turns every unit size (n) the the wire around the magnetizable material will rise the magnetic field used to the magnetizable material. Enhancing the magnetic field used to the magnetizable material consequently makes its own magnetic field stronger.
Similarly, wrapping through thicker wire has actually the exact same effect, however by increasing the current. Choose a widening river, a more thickness conductor allows much more current through.
Another method of enhancing the existing is to mitigate the resistance. A an ext conductive wire might be used, or the circuit deserve to be shortened between the electrical source and the magnet.
Another means of enhancing the existing is to usage a greater electromotive force, or voltage. The pertinent formula is V=IR, the meaning of resistance. If V is the fall in electrical potential over the entire circuit, and R is the resistance end the whole circuit, the current (I) v any point of the circuit have the right to be raised by rise in the applied voltage.
If the circuit is it is provided by alternating current, one more possibility is to switch to direct present of the exact same voltage. The factor that a direct current is superior is because an alternate current switches the magnetic polarity of the magnet prior to it has actually time to develop full strength.
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Paul Dohrman's scholastic background is in physics and also economics. The has skilled experience together an educator, mortgage consultant, and also casualty actuary. His understanding include development economics, technology-based charities, and angel investing.