An electric current produces a magnetic field around it.电流在其周围产生磁场。 相关知识点: 试题来源: 解析 正确 根据电磁学的基本原理,电流通过导体时会在其周围产生磁场,这一现象由奥斯特实验首次发现,并随后形成了安培环路定律等理论。电流产生的磁场方向可由右手法则确定,磁场的强度与电流的大小成正比,与距离...
A straight conductor carrying current produces a magnetic field around it. Does it possess a north or a south pole similar to a bar magnet ? what shape shou
A straight conductor carrying current produces a magnetic field around... 03:11 The frequency of sinusoidal A.C. voltage is 50 Hz. How many times does... 05:28 In an electromagnetic induction, what is the source of electric energy... 01:55 Two wires, A and B are placed parallel to ...
The results showed that the magnetic noise was increased with increasingIsensedue to an enhancement of STT effect, especially a rapid increase of the noise was found whenIsenseexceeds a critical value. An asymmetry ofIsenseindicated that a negative current produces lower noise than a positive ...
This current produces a magnetic flux that acts opposite to the flux produced by primary current. Eq. (5) derived for Rogowski coil can be modified as follows: (7)vs=−Ndϕdt=−NAμoμrlm(ic−Nis)ddt where, vs is induced voltage across the coil terminals, N is the number of ...
The current-carrying coil FC produces amagnetic field. Achange in this field, caused for example by interrupting the current through the coil, induces avoltage impulse in the induction coil J , measured e.g.in volt second.Now, the magnetic field penetrates not only the induction coil J , ...
A current always produces a magnetic field. The stronger the current, the stronger the field. By measuring this field using various techniques: Hall Effect, Induction, or magnetic flux, we can measure the electron flow (current) in the electric circuit. How can we measure current? Since curren...
How Does an Electric Current Affect a Magnetic Pole? We know that when electric current flows, i.e., electric charge is in motion, it produces a magnetic field. If we keep the magnet in a magnetic field, it experiences a force. For electric charges, i.e., electric current, like magne...
at the same distancefrom each wire, Wire A, which carries a larger current, produces a stronger magnetic field than Wire B, which carries a smaller current. This illustrates the principle that a larger current results in a more robust magnetic field at any given point away from the wire, ...
There are generally two ways of generating electrical currents, the first being through a chemical reaction that creates a DC current. The other is by the interaction of conductors with magnetic fields, this produces the alternating current we make the most use of today....