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Explain why an unmagnetised piece of iro...

Explain why an unmagnetised piece of iron is attracted by a bar magnet.

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BINA LIBRARY-ELECTROMAGNETISM-EXERCISE
  1. A small magnet is pivoted to move freely in the magnetic meridian. At ...

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  2. If a bar magnet is cut into two equal parts along the magnetic axis, t...

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  3. Explain why an unmagnetised piece of iron is attracted by a bar magnet...

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  4. Why should the material used for making permanent magnet have high coe...

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  5. "A soft iron core in solenoid acts as an electromagnet". Explain.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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