Advertisements
Advertisements
Question
Write two examples of their useful applications .
Solution 1
Eddy currents are used Magnetic braking in trains, Electromagnetic damping, Induction furnace, Electric power meters.
Solution 2
Uses of Eddy Current:-
- Induction furnace:- The heating effect of eddy current is used for melting metal in induction furnace.
- Electric Brakes:- It is an efficient system of brakes employed in electric trains when the train is to be stopped, a strong magnetic field is applied to the rotating drum. This results in the generation of large eddy currents
RELATED QUESTIONS
State any two causes of energy loss in actual transformers.
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?
State applications of eddy currents.
How is Eddy current produced? How do they flow in a conductor?
The plane in which eddy currents are produced in a conductor is inclined to the plane of the magnetic field at an angle equal to ______.
Consider a metallic pipe with an inner radius of 1 cm. If a cylindrical bar magnet of radius 0.8 cm is dropped through the pipe, it takes more time to come down than it takes for a similar unmagnetised cylindrical iron bar dropped through the metallic pipe. Explain.