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Write the expression for the magnetic fi...

Write the expression for the magnetic field at a point due to a current element.

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The correct Answer is:
`dB=(mu_(@)/(4pi))((Idlsintheta)/r^(2))`
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SUBHASH PUBLICATION-MOVING CHARGES AND MAGNETISM-NUMERICALS WITH SOLUTIONS
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  2. Two circular coils of mean radii 0.1 m and 0.5 m consisting of 5 turns...

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  3. Find the magnitude of magnetic induction at a point 0.06m from the cen...

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  4. A current of 5 mA through a coil of 10 turns produces a magnetic field...

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  5. The magnetic flux at two points on the axis of a circular coil at dist...

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  6. A circular coil of 10 turns and mean radius of 0.1 m is kept with its ...

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  7. The plane of a circular coil is at right angles to the magnetic meridi...

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  8. Two identical circular coils are separated by a distance twice the rad...

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  9. A straight horizontal rod of mass 30 grams and length 0.3m is placed i...

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  10. Calculate the separation between two long, straight parallel wires, ca...

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  11. A conductor of length 10 cm carrying 2.5 A current is placed in a magn...

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  12. Calculate the force experienced by the wire (iii) from the figure.

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  13. A circular coil of 20 turns and radius 10 cm is placed in a uniform ma...

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  14. A solenoid 60 cm long and of radius 4.0 cm has 3 layers of windings of...

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  15. A galvanometer coil has a resistance of 12 Omega and the meter shows F...

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  16. A galvanometer coil has a resistance of 15Omega and the meter shows FS...

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  17. A toroid has a non ferromagnetic core of inner radius 25 cm and outer...

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  18. A straight horizontal conducting rod of length 0.45 m and mass 60 g is...

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  19. In a chamber, a uniform magnetic field of 8.0 G is maintained. An elec...

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  20. A square coil of side 10 cm consists of 20 turns and carries a current...

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  21. Two concentric circular coils X and Y of radii 16 cm and 10 cm respect...

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