By using high resistance wire
By using insulated soft iron wires
By using low resistance wires
Bu using turns of wires
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Eddy currents can be minimized by using insulated soft iron wires. So, the correct option is B.Eddy currents are induced currents that circulate within conductive materials when exposed to changing magnetic fields. These currents can lead to energy losses in systems where they occur.
Using insulated soft iron wires helps minimize eddy currents because:
1. **Insulation**: Insulating the wire prevents direct contact between the conducting material and the surrounding environment, reducing the likelihood of eddy currents forming.
2. **Soft Iron**: Soft iron has high magnetic permeability, meaning it can easily magnetize and demagnetize in response to changing magnetic fields. This property helps confine the magnetic field within the wire, reducing the extent of eddy current formation.
By employing insulated soft iron wires, the effects of eddy currents are minimized, thereby reducing energy losses in the system.
But in the physics questions year 2001 Q48 concerning the same topic, you said the answer is insulated soft wires. Please, which one is now correct?
Eddy current loss is the heating of the core
due to e.m.f.’s being induced not only in the
transformer windings but also in the core.
These induced e.m.f.’s set up circulating currents, called eddy currents. Owing to the
low resistance of the core, eddy currents
can be quite considerable and can cause a
large power loss and excessive heating of the
core. Eddy current losses can be reduced by
increasing the resistivity of the core material or, more usually, by laminating the core
(i.e. splitting it into layers or leaves) when
very thin layers of insulating material can
be inserted between each pair of laminations.
This increases the resistance of the eddy current path, and reduces the value of the eddy
current.
The resistance of the core should be increased, to reduce the eddy current loss. In transformers, the thin sheets of steel in the core should be insulated from each other by a thin layer of varnish. As the laminations are thin, they will have relatively high resistance.
the best answer is insulating the soft iron core, insulating also means laminating
A laminated core has a higher resistance than a non-laminated one with the same number of domains. It therefore does not get such big a currents induced in it.
@Myschool is correct...
It should be B Eddy current is reduced by laminating the sodt iron core and placing insulator between them
Option B is the best answer for this as high resistance is not directly used
@myschool please correct this
Eddy currents form inside the iron core.
To reduce them:
i) Break the current loops.
ii) Increase resistance within the core.
This is achieved by:
Using insulated soft iron sheets or wires (lamination).
by going by your answer high rest wire cause alot of heat hhenc energy is lost in form of heat
resistance is opposition to flow of current, this opposition cause heat just picture it as friction
