why eddy currents are circular?
148754
Eddy currents are always circular in nature because of the reason that current always prefers to take least resistive path. As it is known that for same area of circle and any other finite sided polygon, circle has the least perimeter.
1466583
Uniform circular motion can be described as the motion of an object in a circle at a constant speed. As an object moves in a circle, it is constantly changing its direction. ... An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction.
535608
Operating principle When current passes through the electromagnet, a magnetic field is produced, which attracts the moving core of the contactor. The electromagnet coil draws more current initially, until its inductance increases when the metal core enters the coil.
1144183
The phenomenon of electromagnetic induction is the existence of an induced current in a circuit (such as a coil) placed in a region where the magnetic field motion changes with the time. The magnetic field may change due to relative motion between coil and magnet placed near the coil as shown in the Fig.
1154432
Neodymium magnets (and the nickel plating commonly used on their surface) do conduct electricity. Not as well as, say, copper or aluminum, but it's a conductor.
1132770
Circular motion is where the object travels in a path which is circular -can be a full circle, can be a part of the circle. Periodic motion is where the object repeats its motion after a particular time. Therefore when an object isuniformly moving in a circle and it completes360 degrees, it repeats itself.
1089561
['A magnetic field pulls and pushes electrons in certain objects closer to them, making them move.', 'Metals like copper have electrons that are easily moved from their orbits.', 'If you move a magnet quickly through a coil of copper wire, the electrons will move - this produces electricity.']
973009
Principle behind the Ceiling Fan An electrical current reaches the motor and then enters coils of wire that are wrapped around a metal base. As this current passes through the wire, a magnetic field is caused that expends force in a clockwise motion that actually changes the electric energy into mechanical energy.
771414
Uniform circular motion involves an object traveling a circular path at constant speed. Since the speed is constant, one would not usually think that the object is accelerating. However, the direction is constantly changing as the object traverses the circle. Thus, it is said to be accelerating.
1354416
['The size of the magnetic field. ... ', 'The active length of the conductor. ... ', 'The speed at which the conductor passes through the field.']
382579
Under normal circumstances, the current flowing in the two wires is equal. When an earth leakage occurs due to a fault in the circuit or an accident with the equipment, an imbalance occurs and this is detected by the RCD, which automatically cuts off the power before injury or damage can result.
1312358
The direction of the displacement current itself is in the same direction as E if E is increasing with time (dE/dt > 0). When E is decreasing with time the displacement current is opposite to E (dE/dt < 0).
1203576
Because they dissipate quite a bit of power and generate heat. Build materials will be expensive. This isn't a 0.25W electronic component you're talking about.
293674
Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction.
762598
Electromagnetic induction occurs when a circuit with an alternating current flowing through it generates current in another circuit simply by being placed nearby. ... Every electric current has a magnetic field surrounding it. Alternating currents have fluctuating magnetic fields.
359817
Back EMF can have either a sinusoidal (AC) or a trapezoidal (DC) waveform. The shape of the back EMF is important, as it determines the type of drive current and commutation method that should be used for the motor.
1353032
In real transformers, the two coils are wound onto the same iron core. The purpose of the iron core is to channel the magnetic flux generated by the current flowing around the primary coil, so that as much of it as possible also links the secondary coil.