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A circular coil of 100 turns and of radi...

A circular coil of 100 turns and of radius 4 cm carries a current of 0.5 A. Find out the magnetic field at the centre of this coil. What will be the percentage fall of this magnetic field at a point on the axis, 3 cm away from the centre?

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`7.85xx10^(-4)T,48.8%`
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CHHAYA PUBLICATION-ELECTROMAGNETISM -PROBLEM SET-II
  1. A circular coil of radius 5 cm and of 100 turns is made of an insulate...

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  2. A circular coil of 100 turns and of radius 4 cm carries a current of 0...

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  3. Two parallel coaxial circular coils of equal radius R and equal number...

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  4. Two insulated infinitely long wires are lying mutually perpendicular t...

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  5. A current I flows in the network shown in the figure. Find the magneti...

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  6. A rectangular loop of metallic wire of length a and breadth b carries ...

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  7. A linear solenoid is made of a copper wire of diameter 0.4 mm. Its len...

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  8. A solenoid having 60 turns per cm is made of copper wire of radius 0.3...

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  9. If an electron is moving with a velocity of 10^(-7)m.s^(-1) at right ...

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  10. An electron (charge =-1.6xx10^(-19)C, mass =9.1xx10^(-31)kg) enters a ...

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  11. In a region, a uniform electric field of 100V.m^(-1) is acting along x...

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  12. An electron revolves along a circular path on a plane perpendicular to...

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  13. A proton beam is being accelerated by a cyclotron. Each of the dees ha...

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  14. A proton beam is being accelerated by a cyclotron. Each of the dees ha...

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  15. An electron travels in a circular path of radius 20 cm in a magnetic f...

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  16. A rectangular coil of length 20 cm, breadth 5 cm and number of turns 5...

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  17. A rectangular coil of sides 12 cm and 8 cm having 1000 turns and carry...

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  18. A rectangular loop of sides 0.25 m and 0.10m is carrying a current of ...

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  19. The resistance of galvanometer is 10Omega. If gives a full scale defle...

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  20. The resistance of galvanometer is 10Omega. If gives a full scale defle...

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