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Ratio of magnetic fields at the centre o...

Ratio of magnetic fields at the centre of a current carrying coil of radius r and at a distance 3r on its axis is

A

`sqrt10`

B

`2sqrt10`

C

`10sqrt10`

D

`20sqrt10`

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CHHAYA PUBLICATION-ELECTROMAGNETISM -EXERCISE
  1. A circular coil of radius r carries a current I . It produces magnetic...

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  2. In the given figure a conductor is carrying a current I. The magnitude...

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  3. Ratio of magnetic fields at the centre of a current carrying coil of r...

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  4. Two wires PQ and QR carry equal currents I. One end of each wire exten...

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  5. A vertical straight conductor carries a current vertically upwards. A ...

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  6. Magnitude of magnetic field at the point P in arrangement shown in the...

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  7. The magnetic field at the point of intersection of diagonals of a squa...

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  8. A circular coil of radius R carries an electric current i. The magneti...

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  9. The magnetic field B within a solenoid of length L with N turns and ca...

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  10. In a current carrying long solenoid, the field produced inside the sol...

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  11. A charged particle enters a magnetic field vec(B) perpendicularly with...

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  12. The radius of the circular path described by a charged particle in a m...

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  13. The magnitude of an electric field along x-axis is 1V.m^(-1) and in th...

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  14. A beam of protons projected along positive x-axis experiences a force,...

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  15. A moving electron and a moving proton enter a uniform magnetic field i...

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  16. An alpha- particle and a proton having the same momentum enter a regio...

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  17. A uniform electric field and a uniform magnetic field are acting along...

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  18. A particle of charge q moves with a velocity vecv=ahati+bhatj in magne...

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  19. A proton, a deuteron and an alpha- particle are accelerated by the sam...

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  20. Through a straight conduction wire, current is flowing along positive ...

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