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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

In which of the following devices, the eddy current is not used ______ - Physics

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प्रश्न

In which of the following devices, the eddy current is not used ______ 

पर्याय

  • Electromagnet

  • Induction furnace

  • Electric heater

  • Magnetic breaking in train

MCQ
रिकाम्या जागा भरा
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उत्तर

In which of the following devices, the eddy current is not used Electric heater.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 12: Electromagnetic Induction - MCQ’S

संबंधित प्रश्‍न

State any two causes of energy loss in actual transformers.


Two spherical bobs, one metallic and the other of glass, of the same size are allowed to fall freely from the same height above the ground. Which of the two would reach earlier and why?


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Describe briefly three main useful application of eddy currents ?


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Here, A, B and C refer to ______.

Which of the following does not use the application of eddy current?

When strength of eddy currents is reduced, as dissipation of electrical energy into heat depends on the ...A... of the strength of electrical energy into heat depends on the ...A... of the strength of electric current heat loss is substantially ...B.... Here, A and B refer to ______.

Which of the following is not the application of eddy currents?

Identify the wrong statement.


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Which one is not an application of eddy current?


Eddy currents are also known as ______


A metal plate is getting heated. It can be because ______.

  1. a direct current is passing through the plate.
  2. it is placed in a time varying magnetic field.
  3. it is placed in a space varying magnetic field, but does not vary with time.
  4. a current (either direct or alternating) is passing through the plate.

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.


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