Advertisements
Advertisements
Question
How is Eddy current produced? How do they flow in a conductor?
Advertisements
Solution
Even for a conductor in the form of a sheet or plate, an emf is induced when magnetic flux linked with it changes. But the difference is that there is no definite loop or path for induced current to flow away. As a result, the induced currents flow in concentric circular paths. As these electric currents resemble eddies of water, these are known as Eddy currents. They are also called Foucault currents.
APPEARS IN
RELATED QUESTIONS
Give one example of use of eddy currents.
If the magnetic field outside a copper box is suddenly changed, what happens to the magnetic field inside the box? Such low-resistivity metals are used to form enclosures which shield objects inside them against varying magnetic fields.
A metallic bob A oscillates through the space between the poles of an electromagnet (See the figure). The oscillations are more quickly damped when the circuit is on, as compared to the case when the circuit is off. Explain.
How can the disadvantages of eddy currents be minimized?
What are eddy currents?
If the length of a simple pendulum increases by 5%, then its period shall increase by ______.
Which one is not an application of eddy current?
