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An infinitely long straight current carr...

An infinitely long straight current carrying wire produces a magnetic field B at a point at a distance 'a' from it. What must be the radius of the circular loop, so that for the same current through it the magnetic field at (II) an axial point, distant equal to the radius of the loop equals B?

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BINA LIBRARY-ELECTROMAGNETISM-EXERCISE
  1. "A soft iron core in solenoid acts as an electromagnet". Explain.

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  2. An infinitely long straight current carrying wire produces a magnetic ...

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  3. An infinitely long straight current carrying wire produces a magnetic ...

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  4. Find the force between two straight parallel wires, each of length one...

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  5. In a chamber , a uniform magnetic field of 6.5G(1G=10^−4T) is maintain...

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  6. A proton enters a uniform magnetic field of intensity 1.5 T in a direc...

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  7. A proton enters a magnetic field of flux density 1.5Wb/m^2 with a sp...

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  8. A coil of 200 turns has a cross-sectional area 900 mm It carries a cur...

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  9. A coil of 200 turns has a cross-sectional area 900 mm It carries a cur...

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  10. A galvanometer having a coil resistance 120Omega shows full scale defl...

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  11. A dipole of magnetic moment (2.5 Am^2) is deflected through 30° from m...

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  12. A freely suspended magnet of moment (0.98 Am^2) is deflected through '...

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  13. Find the value of the vertical component and resultant intensity of th...

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  14. An electron is revolving along a circular path of radius 1 À with a fr...

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  15. A moving coil galvanometer has resistance 50Omega. The maximum bearabl...

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  16. A proton enters a magnetic field of flux density 1.5Wb/m^2 with a sp...

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  17. An electron and a proton enter a magnetic field perpendicularly. Both ...

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  18. The earth's magnetic induction at a certain point is [7x 10^(-5)Wbm^-2...

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  19. Two concentric circular coils of 10 turns cach are situated in the sam...

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  20. A long copper tube of inner radius R carries a current I. The magnetie...

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