Magnetic Materials
Magnetic Materials
Top questions
See all →- The magnetic susceptibility of a paramagnetic salt is \(\chi\) at 300 K. Its susceptibility at 200 K will be Answer: D. 1.5chi Curie's law: chi∝1/T⇒chi'=chi×300/200=1.5chi . 1
- The flux rule is the terminology that Feynman used to refer to the law relating magnetic flux to emf. Modern applications of Faraday’s law of induction : Electric generators and motors Dynamos in vehicles Transformers Induction furnaces (indu... 1
- Which property of soft iron makes it useful for preparing electromagnet? An electromagnet should become magnetic when a current is passed through its coil but should lose its magnetism once the current is switched... 1
- What should be retentivity and coercivity of permanent magnet? A permanent magnet should have a large zero-field magnetization and should need a very large reverse field to demagnetize. In other words, i... 1
- What does the hysteresis loop represents? A magnetic hysteresis loop is a closed curve obtained by plotting the magnetic flux density B of a ferromagnetic material against the corres... 1
- Explain one application of electromagnet. Applications of an electromagnet: Electromagnets are used in electric bells, loud speakers and circuit breakers. Large electromagnets are us... 1