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प्रश्न
How are eddy currents generated in a conductor which is subjected to a magnetic field?
उत्तर १
Magnetic flux associated with the plate keeps on changing as the plate moves in and out of the region between magnetic poles. This flux change induces eddy currents in the plate. Directions of eddy currents are opposite when the plate swings into the region between the poles and when it swings out of the region .
उत्तर २
When a conductor is moved in a magnetic field or in a changing magnetic field, Electric current is induced throughout the volume of a conductor and flouse in a closed loop. These concepts are said to be eddy currents.
संबंधित प्रश्न
State any two causes of energy loss in actual transformers.
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.
State applications of eddy currents.
How is Eddy current produced? How do they flow in a conductor?
What are eddy currents?
Which one is not an application of eddy current?
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.
