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Let's use our calculator to estimate a current that must flow in a straight wire to obtain Earth's magnetic field at a distance of 1 cm from the wire. It seems after calculations that we need only 2.5 A to keep up with Earth's magnetic field!
7 wrz 2022 · Use this magnetic field of a wire calculator for straight wires to find the magnetic field strength around any straight current-carrying wires.
Earth’s magnetic field is generated by a feedback loop in the liquid outer core: Current loops generate magnetic fields; a changing magnetic field generates an electric field; and the electric and magnetic fields exert a force on the charges that are flowing in currents (the Lorentz force).
On-line calculators to estimate current and past values of the magnetic field. If you want only the magnetic declination (variation) for a single day between 1900-present, visit our declination calculator.
Find the current in a long straight wire that would produce a magnetic field twice the strength of the Earth’s at a distance of 5.0 cm from the wire. Strategy: The Earth’s field is about \(5.0 \times 10^{-5} T\), and so here \(B\) due to the wire is taken to be \(1.0 \times 10^{-4} T\).
15 lut 2023 · We will first study a simple test case: a long straight wire carrying a current. We want to understand the magnetic field produced by this wire, i.e. how strong is its magnitude, where it points (recall it is a vector), and how does it vary with position. In other words, we want to map the magnetic field around the wire.
Magnetic Field Strength Calculator. The magnetic field strength differs greatly upon the type of device or properties. Below are the online magnetic field strength calculators to find around a wire, magnetic field strength inside a loop and magnetic field inside a solenoid.
