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Two circular, similar, coaxial loops ca...

Two circular, similar, coaxial loops carry equal currents in the same direction. If the loops are brought nearer, what will happen?

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When the loops are brought nearer, the magnetic flux linked with the loops increases. According to Lenz.s Law, the direction of induced emf is such as to decreacc the flux. Hence, the current in the loops will decrease.
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MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-REVISION EXERCISE (Short Answer Questions)
  1. A current is induced in coil C(1) , due to the motion of current carry...

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  2. Consider a rectangular loop and a circular loop are moving with consta...

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  3. Two circular, similar, coaxial loops carry equal currents in the same...

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  4. Given a graph of magnetic flux versus time for two inductors P and Q. ...

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  5. A bar magnet is dropped through a coil C as shown in figure. The graph...

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  6. A bar magnet is falling from some height through a metal ring. (i) W...

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  7. A rectangular loop of 'n' turns of length 'l', width ', rotated with a...

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  8. Consider the following arrangement in which A and B are two coils. Coi...

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  9. Starting from the expression for the energy W=1 // 2 LI^(2), stored in...

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  10. In the figure given below, a bar magnet moving towards the right or le...

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  11. A metallic rod of length l is rotated at a constant angular speed omeg...

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  12. Define self -inductance and its S.I. unit. Derive an expression for se...

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  13. Explain electromotive force.

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  14. What are eddy currents ? Mention two applications of eddy currents.

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  15. How eddy currents can be produced?

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  16. What are eddy currents ? Give some applications of eddy currents. How ...

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  17. Name four applications of Eddy currents.

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  18. A copper coil is moving out of a magnetic field with a constant veloci...

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  19. What is mutual induction? Find the coefficient of mutual induction and...

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  20. The mutual inductance depends upon

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