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Figure shows two concentric loops of rad...

Figure shows two concentric loops of radii R and `(R gt r)`. A current i is passed through the outer loop. Find the flux linked with inner loop and the mutual inductance of the arrangement.

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At `O, B=(mu_(0)i)/(2R).` As R gtgt r,
`therefore `We can assume that same field B acts
one the total area of inner loop.
`phi=BxxArArr phi(mu_(0)i)/(2R)xxpir^(2) M=(phi)/(i)=(mu_(0)pir^(2))/(2R)`
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AAKASH INSTITUTE ENGLISH-ELECTROMAGNETIC INDUCTION-ASSIGNMENT(SECTION -D) Assertion-Reason type Question)
  1. Figure shows two concentric loops of radii R and (R gt r). A current i...

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  2. A : Total induced emf in a loop is not confined to any particular poin...

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  3. A: The induced current flows so as to oppose the cause producing it. ...

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  4. A: Faraday's law is an experimental law. R: Time varying magnetic f...

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  5. Assertion : An electrostatic field line never form closed loop. Reas...

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  6. A: The mutual Induction between the two coils infinitely apart is zero...

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  7. A: An inductor is called the inertia of an electric circuit. R: An ...

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  8. A: At any instant, if the current through an inductor is zero, then th...

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  9. A: There may be an induced emf in a loop without induced current. R:...

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  10. A: When the magnetic flux through a loop is maximum, induced emf is ma...

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  11. A: When a conducting loop is kept stationary in a non-uniform magnetic...

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  12. A: When an electric motor is started, a variable resistance (that decr...

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  13. A: When a bar magnet is dropped into a vertical long hollow metallic t...

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  14. A: The power output of a practical transformer is always smaller than ...

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  15. A: Electrical power through transmission lines is transmitted at high ...

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  16. A: The electric field induced due to changing magnetic field is non-co...

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