Advertisements
Advertisements
Question
Write two examples of their useful applications .
Advertisements
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.
Describe briefly three main useful application of eddy currents ?
Metallic (nonferromagnetic) and nonmetallic particles in a solid waste may be separated as follows. The waste is allowed to slide down an incline over permanent magnets. The metallic particles slow down as compared to the nonmetallic ones and hence are separated. Discuss the role of eddy currents in the process.
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.

State applications of eddy currents.
Give the uses of Foucault current.
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 ______.
A constant retarding force of50 N is applied to a body of mass 20 kg moving initially with a speed of 15 ms-1. How long does the body take to stop?
