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Choose the corect options. Let r be the...

Choose the corect options.
Let r be the distance of a point on the axis of a bar magnet from its centre. The magnetic field at r is always proportional to:

A

`1//r^2`

B

`1//r^3`

C

`1//r`

D

Not necessarily `1//r^3` at all points

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CHETANA PUBLICATION-MAGNETISM-EXERCISE
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  2. Choose the corect options. A thin rod of length L is magnetized and h...

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  3. Choose the corect options. Let r be the distance of a point on the ax...

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  4. Choose the corect options. A place where the vertical components of t...

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  5. The magnetic fields at a distance 'd' from a short bar transverse posi...

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  6. Choose the corect options. The magnetic field at a point A on the axi...

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  7. What is magnetic flux? State its SI unit

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  8. Define Magnetic Induction at any point?

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  9. What are magnetic poles.

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  10. What do you mean by Terrestrial magnetism.

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  11. Draw a diagram to illustrate the magnetic lines of force between the s...

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  12. What is Bar magnet. Draw the diagram to represent magnetic length.

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  13. . A short bar magnet has a magnetic moment of 2A -m^2. If its magnetic...

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  14. Draw the magnetic force lines of a current carrying finite solenoid?

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  15. What are magnetic maps of the Earth.

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  16. A magnet makes an angle of 45^@ with the horizontal in a vertical plan...

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  17. Prove that B axis = 2B equator.

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  18. Derive an expression for Earth magnetic field interns of its component...

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  19. Derive an expression for magnetic field at an arbitrary point (r) due ...

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  20. A short magnetic dipoles has magnetic moment 0.5 Am^2. Calculate its m...

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