The inductor impedance calculator calculates the impedance of an inductor based on the value of the inductance, L, of the inductor and the frequency, f, of the signal passing through the inductor, according to the formula, XL= 2πfL. A user enters the inductance, L, and the frequency, f, and the result will automatically be calculated and shown.
What is electromagnetic induction?If you attached a metal wire to a, you would create a current - electrons would move along the wire. Then, if you put this wire in a magnetic field, an additional electric force would be induced by the motion of electrons in the field.This effect also works in reverse - when stationary electrons are placed in a varying magnetic field, an electromotive force (EMF) is induced, and the current starts to flow. This phenomenon is known as electromagnetic induction. Magnetic field and fluxThe magnetic field has two main characteristics.
The first one is the magnitude B of the field and is measured in teslas (symbol T), or newtons per meter per ampere. The second - magnetic flux Φ - is defined as the magnetic field passing through a surface, and is measured in webers (symbol Wb).Magnitude and flux are interdependent - you can use the equation below to easily switch between them. A stands for the cross-sectional area of the coil, in which the EMF is induced.Φ = B. ATeslas and webers are linked by the following formula:1 Wb / 1 m² = 1 T. Lenz's law and Faraday's law formulaFaraday's law states that the voltage induced in a circuit is equal to the rate of change - that is, change in time - of the magnetic flux through a loop:EMF = dΦ / dtLenz's law is the key second law that describes electromagnetic induction. It doesn't describe the magnitude, but rather the direction of the current, stating that the current will always oppose the flux that produced it. It is incorporated into the Faraday's law with a minus sign:EMF = - dΦ / dtIf you try to induce the electromotive force in a coil with multiple turns, you can also multiply this value by the number of turns to account for the number of turns N:EMF = - N.
dΦ / dtThis is the formula used by our Faraday's law calculator. How to calculate the electromotive force?Usually, you won't immediately know what is the magnetic flux in the coil. Don't worry, though - our electromagnetic induction calculator can find it, too! Just follow the steps below to calculate the induced voltage.Decide on the cross-sectional area and the number of turns in the loop.
For example, you can use a circular coil with a cross-section of 30 cm² and with ten turns.Find out what is the magnitude of the magnetic field. For instance, we can assume a field of 0.4 teslas.Calculate the change in magnetic flux as the product of magnetic field and the cross-sectional area:dΦ = B. AdΦ = 0.4. 30. 10⁻⁴ = 0.0012 Wb.Now, determine how long does it take the magnetic field to change by 0.4 T. We can assume that it took 8 seconds.Use the Faraday's law formula to calculate the electromotive force:EMF = - N.
dΦ / dtEMF = - 10. 0.0012 / 8 = -0.0015 VThe induced voltage is equal to 0.0015 V. The minus sign indicates that the direction of the current opposes the direction of the magnetic flux.
The calculates the magnetic field strength in Gauss near a shaped neodymium magnet. Enter the size of the magnet and a position to measure the field strength.All data is provided in gauss. (1 tesla = 10,000 gauss). Note that the Measurement Position assumes the zero position (0,0) is at the center of the magnet, inside the magnet.Click to go to our that shows Pull Force and more.All data presented in this calculator is derived from a series of finite element analysis studies for a single magnet in free space. While we have verified the accuracy of results with our own experimental measurements, be sure to verify with your own measurements in your particular application. Other nearby magnets or ferromagnetic materials can dramatically alter your results.All dimensions and positions must be in decimal format.
Fractional inches will not calculate correctly.This calculator only considers discs and cylinders that are magnetized along the clyindrical axis. While K&J Magnetics offers diametrically magnetized magnets, this calculator does not apply to them.NOTE:This calculator is currently a beta version and is intended only for reference. K&J Magnetics, Inc. Will not be held liable for its use. All calculations are approximations and should not be used as the sole source of design data.
The factors of your application may change these values considerably. Be sure to test magnets in your configuration.Please report any troubles, concerns or suggestions about this calculator to.